2001 BMW 3-Series BMW 3-Series 2001

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2001 BMW 3-Series repairs by problem area

Engine (47%)

Transmission and Drivetrain (6%)

Brakes and Traction Control (1%)

Suspension and Steering (17%)

Electrical and Air Conditioning (19%)

Paint, Rust, Leaks, Rattles, and Trim (5%)

Other (4%)

Chart based on 532 repairs.
See TSBs and recalls for the 2001 BMW 3-Series.

2001 BMW 3-Series engine repair cost distribution

$2500+ (2%)

$1000 - $2499 (16%)

$500 - $999 (17%)

$100 - $499 (36%)

< $100 (29%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 223 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2001 BMW 3-Series

Engine not specified

90000 mi

US $3000
This car is a piece of junk !! A complete money hog and BMW deserves to be sued. 
151000 mi

US $450
Engine mounts replaced 
166000 mi

US $700
Drive belt broke and was replaced. Radiator replaced 
10000 mi worn clutch. 
60760 mi

C $2434
Crankcase vent stuck but seems very expensive to repair. 

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2001 BMW 3-Series 4dr Wagon

184-horsepower 2.5L I6 5-speed shiftable automatic RWD

79000 mi

US $1200
Fuel filter, crankcase breather valve assembly, fuel tank purge valve. Installed customer supplied headlight lenses. Front crank seal. 
79000 mi

US $1020
Mass Airflow Sensor and fuel filter replaced. Motor mounts and transmission mounts replaced. 
162000 mi

US $520
Replaced belt tensioner, DISA valve 
40000 mi

US $100
Auto transmission shifted abruptly downshifting from 2-1. Updated transmission and engine software from original versions to current (software was 4 revs old). 
63300 mi

US $370
Cam position sensor failed. Engine hesitated near idle and had reduced power. Check engine light was illuminated. 
82000 mi

US $700
Thermostat and lower coolant hose were leaking. 

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2001 BMW 3-Series 4dr Wagon

184-horsepower 2.5L I6 5-speed manual RWD

101000 mi

US $675
Replace radiator, water pump, expansion tank & hoses 
247000 mi

US $125
Exhaust camshaft sensor 
148000 mi

US $120
Fuel Pump replaced 
214000 mi

US $25
Rusty exhaust let go between the cat and rear exhaust. Drilled out rusty fasteners and temporarily fixed with random hardware. 
249700 mi Engine would not start. A compression check revealed multiple bad cylinders. Something failed inside that scattered debris which destroyed multiple cylinders. 
100000 mi

US $100
Idle problem 

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2001 BMW 3-Series 4dr Wagon

184-horsepower 2.5L I6 5-speed manual AWD

63000 mi

US $420
Ignition coils failed/failing. Bought new coils and spark plugs and installed them. Rough idle/igniton missfire symptoms cured. 
79000 mi

US $600
Serpentine belt broke. Towed car to shop. Shop replaced 2 idler pulleys, s. belt,  water pump, coolant, rad. bleed screw. Had shop replace rear rotors and pads (wear item) while the car was there. 

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2001 BMW 3-Series 4dr Sedan

225-horsepower 3.0L I6 5-speed shiftable automatic RWD

66000 mi

US $240
VANOS oil supply line leaking - replaced 
95000 mi

US $500
Oil leak at valve cover gasket bolt seals. 
97000 mi

US $500
valve cover gaskets leaks near front (no. 1) - replaced gasket and rubber bolt grommets 
112900 mi

US $5
Bleed screw for cooling system cracked in half and caused the car to overheat. 
184000 mi

US $1500
Fan clutch, belts, tension pulleys 
196000 mi

US $719
replaced the oil cap, wiper blades, and changed the oil. 
200000 mi

US $590
Motor mount replacement. 
209000 mi

US $1450
Pulleys and belts replaced. 
219300 mi

US $1300
Oil pan gasket leaking. Replaced. Headlamp replaced. Oil changed. 
225000 mi

US $1500
Oil filter housing leaking.Vacuum leak. 
247000 mi Oil leak. Temperature sensor. Vacuum leak. Coolant leak. 
66000 mi

US $750
Belt tensioner bearings failed. Valve cover gasket leaked. 
74000 mi

US $600
Coolant tank rupture. Engine overheated. Coolant tank, pump, hoses, replaced. Oil leak detected in oil pan. Gasket replacement postponed. 
77500 mi

US $90
Oil indicator yellow warning. Believed faulty sensor or bad oil pump causing low oil pressure. Oil level not a factor, even with known slow oil leak. Waiting for next oil change to replace sensor, pump, and pan gasket. Engine misfired. But no problem after restart, and could not replicate. 
75000 mi

US $1400
Coolant leak again, hose ruptured after system was replaced previously. Took to dealer instead of local guy this time. They found errors in his installation. 
79200 mi

US $3995
Vacuum hose leaky causing improper fuel mixture. 
80000 mi

US $437
Replaced the oil filter housing gasket after 'heavy leak' was found by mechanic when car was in shop for brake service. 
138000 mi

US $580
Head gasket blown between cylinders 5 and 6, no compression. Replaced head gasket as well as other gaskets and hoses during the repair. 
83080 mi

C $250
Oil level sensor 

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2001 BMW 3-Series 4dr Sedan

225-horsepower 3.0L I6 5-speed shiftable automatic AWD

144500 mi

US $250
Oil Separator Valve 

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2001 BMW 3-Series 4dr Sedan

225-horsepower 3.0L I6 5-speed manual RWD

123000 mi

US $2000
Bought car from dealership in March, discovered problems. Legal settlement reached and dealer agreed to pay for the replacement of all parts needing repair. Include oil leaks. 
82000 mi Valve cover gasket. Motor mounts. 
116000 mi

US $47
Upper radiator hose began to leak from bleed screw. Found a crack, so replaced. 
118000 mi

US $315
Cooling system overhaul. All hoses, expansion tank and water pump replaced. Expansion tank was found to be cracked and leaking at base. 
128000 mi

US $60
Thermostat failed open. Replaced thermostat and flushed/filled coolant. 
135000 mi

US $80
Ignition switch failure prevented engine from starting. 
138000 mi

US $80
Replaced failed coolant expansion tank. 
155300 mi

US $600
Electric cooling fan failure. Fan replaced. Crack in radiator tank. Radiator replaced. 
186000 mi

US $50
Water pipe to expansion tank hose leaking. Replaced hose, refilled and bled cooling system. 
194000 mi

US $80
Crank position sensor failed. Replaced sensor and cleared adaptations. 
210000 mi Factory installed clutch starting to show signs of being worn out at 210,000 miles. Replaced clutch. 
238000 mi

US $60
Thermostat failed open. Replaced thermostat and topped off/bled cooling system. Ignition coil for cylinder 3 failed. Replaced coil. 
119000 mi

US $95
Accessory belt bearings where worn and cause a low rattle noise in the engine bay. Parts were replaced and haven't had a problem since. I just got in the car to drive it home from my mechanic's shop after they concluded the previous repair. After the engine ran for about 1 minute, the Service Engine Soon light came on. My mechanic said my idle control valve needed cleaning 
115000 mi

US $100
Oil level sensor replacement 
116000 mi

US $1000
gasket replacement 
126000 mi

US $700
Replaced fuel pump.  
144000 mi

US $1100
Cooling fan AND radiator 
77000 mi

US $235
Coolant expansion tank cracked. Replaced tank and upper radiator hose. 
89000 mi

US $25
Check Engine Light came on. Bought code reader and read codes. Replaced Gas Cap. 
101400 mi

US $65
Code thrown for Camshaft Position Sensor, Replaced Sensor. 
105600 mi

US $140
Worn Belt tensioner replaced 
128000 mi Oil Filter Housing Gasket leaking. Gasket replaced. 
77000 mi

US $60
Replaced a leaking valve cover gasket. 
85000 mi

US $30
Crack in air intake boot causing a check engine/service engine soon light. Replaced cracked intake boot and reset SES light.  
103000 mi Mass air flow sensor. 
92000 mi Mass air flow sensor and lower intake boot replaced. Problem was left over from prior month due to lag in placing parts order. 
100000 mi

US $5
Oil filter housing gasket failed and the car developed a slow oil leak. Replaced failed gasket, resolving issue. 
124000 mi

US $3000
Radiator, hoses, water pump, idler pulley, and belt tensioner replacement. Radiator had a stress crack in plastic edge, water pump bearings were bad and causing noise. 
115060 mi

$50
Plastic intake boot and adjoining vacuum hose were old (original 2001 parts) and had cracked causing unmetered air intake which caused a minor rich condition. 
133500 mi

US $1100
In July, 2008: coolant leak: required radiator replacement. 
142000 mi

US $925
Car would not start: towed to shop; fuel pump and filter were replaced, also oil service while there.  
152000 mi

US $1100
oil leak 

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2001 BMW 3-Series 4dr Sedan

225-horsepower 3.0L I6 5-speed manual AWD

213000 mi

US $100
Expansion tank developed a crack and was leaking. Replaced the tank. 
215700 mi Oil leak developed at higher RPM - valve cover gasket was replaced 
210800 mi

US $58
The DISA valve had broken and was clicking loudly. I purchased a DISA valve repair kit on Amazon. 
236000 mi

US $28
Exhaust Cam Sensor needed to be replaced as it was throwing a trouble code P0369 (i think) 
112220 mi

C $420
Exhaust cam position sensor. 
223500 mi All fuel injectors (leaking fuel in cold weather). 
236500 mi

C $500
Rad leaking at passenger side corner. 
129000 mi

US $1000
Low oil (failed filter gasket). Pulleys and serpentine belt changed. Belt cracked, but functioning. Pulleys working but rattly. I also replaced battery, spark plugs at 108k, need new xenon lamps now (still on OEM lamps). 
153000 mi

US $185
Exhaust leak where the cat meets the front muffler. 
192300 mi

US $300
Severe oil leakage, burning oil 

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2001 BMW 3-Series 4dr Sedan

184-horsepower 2.5L I6 5-speed shiftable automatic RWD

102000 mi

US $756
Cyclone filter replaced (oil separator) 
105000 mi

US $250
Thermostat replaced. Valve cover replaced. 
107000 mi

US $80
Replaced idler pulley. Replaced broken cooling fan. 
125000 mi

US $150
water pump 
66000 mi

US $1027
Valve cover leaking - replaced 
68200 mi

US $1230
Leaking hoses, replaced coolant overflow, replaced coolant cap. 
131000 mi

US $175
low oil sensor burned out 
128000 mi

US $110
Camshaft Sensor. Spark Plugs 
77500 mi

US $290
Oil sender was replaced 
77000 mi

US $230
Replaced alternator bearing. 
118300 mi CRANK SENSOR 
119300 mi

US $60
REPLACED THERMOSTAT 
41540 mi Gas tank valve was stuck, it was impossible to fill up the tank. The pump trigger kept kicking back, as the gas was draining very slowly in the neck. 
42340 mi The rubber neck was plugged with debris. They ordered a new rubber neck from Germany. They had replaced the gas tank during the previous visit, but it hadn't fixed the problem. 
53320 mi Runs out of gas while the gauge shows 1/4 tank gas. Gauges tested working fine, guessing one of the two sending units or jet pump failure. Dealer suggested to replace all three items to be safe. Estimate $1450 including labour. 
57660 mi Forums suggested that replacing the fuel filter or using fuel cleaner might fix the inaccurate fuel gauge. I did both, and the gauge then operated correctly. I'm not sure which one remedy fixed the issue. 
66340 mi

C $100
Oil level sensor defective, replaced defective sensor. Parts $49, labour $45. 

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2001 BMW 3-Series 4dr Sedan

184-horsepower 2.5L I6 5-speed shiftable automatic AWD

89000 mi

US $200
Idle control/regulator valve. Erratic idle. 
93000 mi

US $180
The replacement water pump I installed about 2 years ago seized. Bearing frozen solid. 
107000 mi

US $70
Valve cover gasket replaced. Oil line for vanos replaced. Replaced the spark plugs for the first time in cars life. 
108300 mi

US $188
Valve cover gasket replaced. 
113400 mi

US $250
Replaced intake and exhaust cam sensors. 
110200 mi Replaced fuel pump. 
125300 mi

US $300
Replaced adjuster unit (DISA) valve. 
131200 mi Replaced upper and lower radiator hoses, expansion tank, and radiator. 

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2001 BMW 3-Series 4dr Sedan

184-horsepower 2.5L I6 5-speed manual RWD

104000 mi Replaced secondary air pump. 
130272 mi

US $210
replaced failed expansion tank. replaced failed cooling expansion tank. 
130970 mi

US $485
Replaced alternator 
154700 mi

US $607
Replacement of oil filter stand gasket Replacement of valve cover - cracked. 
143000 mi

US $500
Coolant system leak. Replaced radiator, cap and expansion tank hose. 
162000 mi

US $1212
Replaced failing crank vent valve and associated hoses. Oil filter housing leaking at gasket. 
165100 mi

US $450
Engine thermostat replaced 
163740 mi

R 200
Car would not start and had to be towed to the repair shop. Fuel pump was replaced. 
166860 mi

R 100
Car was briefly started on Saturday, would not start on Monday. Was towed in, problem diagnosed as flooding due to some sort of injection system glitch - apparently it commonly happens with BMWs. Spark plugs replaced during diagnosis. 
186000 mi car will not start, feeds too much fuel, floods and fouls spark plugs Plugs were replaced and car started after a lot of cranking 
189100 mi Clutch replaced, it burnt and the car smelled very bad 
201500 mi

R 150
Oil leak - tappet cover gasket was replaced. 
148400 mi

US $65
Fuel pump replaced because of symptoms, but problem turned out to be cam sensor. Cam sensor 
152000 mi

US $287
oil leak from ofhg, main front seal, oil pan gasket 
160000 mi

US $110
leak in lower hose. replaced expansion tank by mistake too 
176200 mi

US $65
Ignition coil cylinder 1 failed 
178700 mi

US $150
Radiator and expansion tank replaced 
177000 mi

US $200
Replace water pump and belts. 
178000 mi

US $600
Water in oil, removed, resurfaced and replaced head. Inspected head and block for cracks with no indication. Head gasket showed no indication of failure either. 
68000 mi

US $175
Crankshaft Position Sensor failure 
76000 mi

US $1600
Multiple issues - cooling system sensor indicated low coolant (coolant was normal). 
76200 mi noise associated with cold starting. only occurred for 2-3 minutes after cold start. Advised it was associated with cold engine start in cold conditions (valve diverted exterior air flow until engine warmed?) Car is going to Arizona so not a prob. 
86000 mi

US $1500
Significant oil leaks from unknown points in the engine. Numerous seals and gackets were replaced. While the oil leaks have generally been fixed, there are still some minor drips. 
151900 mi

C $200
Coolant expansion tank cracked, spilling all coolant in middle of traffic jam.... No fun. 
146000 mi Thermostat housing leaked coolant from weep hole. Replaced housing under warranty 
146000 mi

US $1600
Front main seal leaking oil 
147000 mi

US $650
Leaking oil pan gasket 
87000 mi

US $2000
general maintenence, oil leak. Oil lite comes on when oil is at level. 
87000 mi

US $3000
repaired oil leaks, valve cover gaskets, front seal gasket, oil service, oil sensor,  thermostat,  

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2001 BMW 3-Series 4dr Sedan

184-horsepower 2.5L I6 5-speed manual AWD

89000 mi

US $1500
Fuel pump not reliable on steep uphill slope. Pump and Filter replaced. 
93000 mi

US $450
Thermostat sticking caused check-engine light. Valve cover gasket issue. 
128000 mi

US $60
Replaced leaking valve cover gasket 
150800 mi

US $600
Got a Thermostat stuck open code. Replacing thermostat Lasted aprox. 60,000 miles 
155000 mi

US $99
Expansion tank cracked and developed a leak. Expansion tank and cap replaced. Coolant refilled and blead 

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2001 BMW 3-Series 4dr Sedan

168-horsepower 2.2L I6 5-speed manual RWD

117800 mi

€250
I changed the valve cover gasket, (that thing was zo dried out, brittle. it broke into a lot of pieces when i removed it.) also replaced the head-ventilation-hoses 

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2001 BMW 3-Series 4-door

6-cylinder manual 2WD

27000 mi

US $140
Cam position sensor, exhaust side failed and was replaced. 
28000 mi

US $50
Cam position sensor, intake replaced. 
36000 mi Replacement of hose as preventative maintenance. 
94000 mi

US $262
Heard whistling noise then vibration noise. Looked under hood and could see the waterpump turning out of round. 
105000 mi

US $50
Valve cover gasket was leaking. Two hour "Do It Yourself" job. 

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2001 BMW 3-Series 4-door

6-cylinder automatic 2WD

52080 mi

$1172
Told the dealer, car was losing power. Dealer said both overhead cam sensors were damaged. Had to pay for both sensors. 
69440 mi

$1100
Oil leak in oil filter area. Pulley noise when car is cold. Dealer replaced pulley. 
71300 mi

$850
Motor oil leak. 
56000 mi

US $650
Belt driving alternator was slipping due to faulty tensioner. Replaced. 

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2001 BMW 3-Series 2dr Coupe

333-horsepower 3.2L I6 6-speed manual RWD

85300 mi

US $210
Engine and AC belts, tensioners, and pulleys replaced due to squeaking/chirping pulley. 
84200 mi

US $200
Replaced oil level and temperature sensor in oil pan. Also replace oil pressure sensor in oil filter housing. Finally, throttle position sensor at the front of the engine was replaced. 
97300 mi

US $200
Coil pack was cracked and needed to be replaced. 
112000 mi

US $10000
replaced rod bearings 
113000 mi

US $400
accessory belt replacement 
34000 mi

US $1800
Car shook hard and ran badly, then CEL came. Complete VANOS failure (at a very low mileage). Both exhaust hub tabs broken. s54 specialist indie replaced with Dr.Vanos rebuilt and preventative Beisan solenoid. Labor was 600, parts were 1200. 
37200 mi

US $550
I limped car home when it started badly (even worse than previous VANOS issue) and CEL. Turns out on 3 cyls coils were gone. Past recall, but previous owners did not put enough miles to get to the issue in time. Saved 200$ by ordering parts. 
55000 mi

US $1300
mass air flow meter went out of tolerance 

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2001 BMW 3-Series 2dr Coupe

225-horsepower 3.0L I6 5-speed shiftable automatic RWD

101000 mi

US $570
Vanos valve leaking oil; no associated idle problems 
110000 mi

US $1400
Valve cover leaking oil. Gasket replaced. Oil filter housing gasket leak. Gasket replaced, along with lower vanos hose (damaged due to leaking oil). Also replaced lower radiator hose, crank valve hose 
48200 mi

US $885
Cam sensors had to be replaced 
70000 mi

US $760
Radiator Overflow assembly,float, and window washer bottle and sensor 
91000 mi

US $600
Radiator cracked Oil Filter Housing Leaking two weeks after radiator 
107710 mi

US $337
Valve Cover Gasket Replaced 
125000 mi

US $1070
Motor and Transmission Mounts Replaced 

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2001 BMW 3-Series 2dr Coupe

225-horsepower 3.0L I6 5-speed shiftable automatic AWD

172000 mi

US $120
thermostat failed soft (too cold malice also replaced water pump due to age (no issues) 

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2001 BMW 3-Series 2dr Coupe

225-horsepower 3.0L I6 5-speed manual RWD

128953 mi

US $23
R&R Tensioner Pulley 
128700 mi

US $6
Fixed Vacuum leak on the DISA seal sealing surfaces by using RTV Silicone. Fixed Vacuum leak on the DISA seal sealing surfaces by using RTV Silicone. 
96100 mi

C $220
Camshaft Position Sensor. DIY replacement; about 1 hour including cleanup (15 mins of actual "work"). 
144700 mi

US $260
cam position sensor 
158000 mi

US $300
Maf, ignition coil 
103000 mi

US $1100
Smog test turned into a nightmare. Vacuum leak led to inability to quickly get codes to reset in order to redo test. 
39000 mi

US $105
Exhaust camshaft sensor quit. Replaced camshaft sensor and the check engine light went off. 
122000 mi

US $130
Replaced camshaft position sensor 
58000 mi

US $70
DIY - Replaced leaking thermostat. 
74000 mi

US $438
Worn differential mount bushings. Replaced by independent mechanic. 
63100 mi

US $60
Engine developed a minor oil leak; replaced valve cover gasket. Problem has been resolved. 
129000 mi

US $40
Upper intake boot was ripped. 
133000 mi

US $1018
Replaced clutch. I think the self-adjusting springs went. 
133000 mi I'd randomly get a engine light - after reading codes the suspect was the thermostat even though it held temp fine. Reset the code and it would go away for months, weeks or days. Popped up around 110k. 
114000 mi

US $1300
Coolant expansion tank crack. Also replaced water pump, thermostat, hoses, belts. 
148000 mi

US $1300
Mass air sensor 
150500 mi

US $200
Bracket holding exhaust pipe loose, rusted 

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2001 BMW 3-Series 2dr Coupe

184-horsepower 2.5L I6 5-speed shiftable automatic RWD

172000 mi

US $40
Blown upper radiator hose, temporary repair then hose replacement. 
179000 mi

US $60
Detected leak in water pump area, replaced thermostat housing gasket then water pump, even though old water pump was still functioning save for O-ring seal. 
216000 mi

US $100
PCV hoses cracked leading to fault code. Difficult to diagnose, relatively easy to fix. 
247000 mi

US $18
Leaky temperature sensor at lower radiator hose, replaced. 
264000 mi

US $80
Replaced secondary coolant hose. 
275000 mi

US $30
Replaced upper radiator hose (bleed valve cracked) 
252000 mi

US $60
Replaced all 6 ignition coils. 

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2001 BMW 3-Series 2dr Coupe

184-horsepower 2.5L I6 5-speed manual RWD

78000 mi Low coolant level due do air bleeder screw broken in half and spewing coolant. Dealer removed broken screw and installed a new one in less than 30 minutes at no charge to me. 
76000 mi

US $100
Check engine light was on; evaporative emissions system valve faulty; ordered part online and replaced; 

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2001 BMW 3-Series 2dr Convertible

333-horsepower 3.2L I6 6-speed manual RWD

78486 mi

US $120
Replaced camshaft position sensor Replaced oil temp sensor 
106100 mi

US $23
Replaced squealing idler pulley. 

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2001 BMW 3-Series 2dr Convertible

225-horsepower 3.0L I6 5-speed shiftable automatic RWD

70000 mi

US $35
Replaced valve cover gasket to solve oil leak. 
75200 mi

US $846
Thermostat housing leaking 
76000 mi

US $240
Exhaust cam position sensor replaced. 
78000 mi

US $127
Overflow tank ruptured. Loss of coolant. Check engine light. Air leak at the oil filler cap. Resealed cap with no further problem. 
121000 mi

US $400
replace leaking valve cover gasket 
127000 mi

US $200
the coolant expansion tank was leaking. 
127800 mi

US $560
belts and tensioners 
158300 mi

US $1035
Bad fuel pump relay required replacement of fuel pump. 
138000 mi

US $1030
fuel pump and filter 
145000 mi

US $100
cracked overflow tank 

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2001 BMW 3-Series 2dr Convertible

225-horsepower 3.0L I6 5-speed shiftable automatic AWD

90000 mi

US $350
Expansion tank leak, replaced along with radiator and automatic transmission thermostat 

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2001 BMW 3-Series 2dr Convertible

225-horsepower 3.0L I6 5-speed manual RWD

122140 mi

$600
Clutch 
130200 mi

$120
Camshafts intake and exhaust position sensors 

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2001 BMW 3-Series 2dr Convertible

225-horsepower 3.0L I6 5-speed manual AWD

89000 mi

US $85
Check engine light on - major EVAP leak according to the code. Mechanic smoked the exhaust system, found no leaks, then reset the light. 
94000 mi

US $600
Oil pan gasket replaced 
100400 mi Water pump seeping 

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2001 BMW 3-Series 2dr Convertible

184-horsepower 2.5L I6 5-speed shiftable automatic RWD

108100 mi

US $300
Radiator overflow container failed 
101000 mi

US $50
Replaced exhaust cam position sensor 
109000 mi

US $700
Cooling system failure. Radiator tank leaking,and thermostat stuck open. Replaced tank and associated parts,heated thermostat,water pump, all hoses and belts. 
124200 mi

US $110
Rough running engine. Went into limp mode. Replaced #1 ignition coil. 
128000 mi

US $1790
Oil filter housing gasket, Vanos oil line, 
129000 mi

US $700
Oil pan gasket replacement 

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2001 BMW 3-Series 2dr Convertible

184-horsepower 2.5L I6 5-speed manual RWD

92000 mi

US $20
Oil level sensor so bad and it was replaced during the last oil change. 
95000 mi

US $60
Thermostat was sticking open and not allowing the engine to warm up fully. 

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2001 BMW 3-Series 2-door

6-cylinder automatic 2WD

70000 mi

US $200
Thermostat corroded, stuck in open position. Tech stated that if left unrepaired, corrosion could migrate to the ECM via the sender cable and ruin it. 
74000 mi

US $297
Cracked coolant expansion tank replaced along with tank cap, level sensor, thermostat, & antifreeze. 
75000 mi Brake and DSC warning laps illuminated simultaneously. This fault disables both the DSC and anti-lock braking systems. Steering angle sensor replaced. 

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2001 BMW 3-Series Engine Problems

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