2004 BMW Z4 BMW Z4 2004

We are 106,000+ car owners sharing real-world car information.

Join Us

2004 BMW Z4 repairs by problem area

Engine (39%)

Transmission and Drivetrain (5%)

Brakes and Traction Control (1%)

Suspension and Steering (6%)

Electrical and Air Conditioning (28%)

Paint, Rust, Leaks, Rattles, and Trim (16%)

Other (4%)

Chart based on 79 repairs.
See TSBs and recalls for the 2004 BMW Z4.

2004 BMW Z4 repair cost distribution

$2500+ (3%)

$1000 - $2499 (11%)

$500 - $999 (21%)

$100 - $499 (29%)

< $100 (36%)

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

Chart based on 70 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2004 BMW Z4 2dr Convertible

225-horsepower 3.0L I6 6-speed manual RWD

BMW Z4 in Ontario, Canada
Dec 2010 - Jun 2018
Oct 2010

26102 mi

C $300
Engine cooling system (radiator, water pump, thermostat, heater core, etc.), repair Battery replaced 
Apr 2016

37300 mi

C $500
Control arm bushings replaced Valve cover gasket replaced 
May 2017

40300 mi

C $1200
Change belt - cracks observed and change water pump (anticipatory) 
BMW Z4 in Alabama, United States
Aug 2010 - Mar 2018
Sep 2010

57000 mi

US $50
Side mirror remote adjustment switch failed. Switch was replaced. Manual transmission shifting poorly -- inconsistent and balky. Dealer diagnosed problem as internal to transmission, requiring replacement. Transmission ordered but not yet received. 
Oct 2010

58000 mi
Transmission replaced. Transmission was replaced. Had been diagnosed on a previous visit but had to wait for re-manufactured transmission to be received. 
Dec 2010

60000 mi

US $149
Service Engine Soon light turned on. After reading the trouble codes myself with a generic OBD-2 tool I repaired the problem by replacing both upstream O2 sensors. Probably only one sensor was actually bad. 
Dec 2011

73000 mi

US $53
Valve cover gasket had a slight oil leak -- I replaced the gasket set and associated sealing grommets. I'm sure an experienced mechanic could have done this in much less time than the 3 hours it took me. 
Dec 2013

96000 mi

US $43
There was a small coolant leak where one of the coolant hoses mates with the expansion tank. I replaced the hose ($43). Also preemptively replaced the expansion tank ($85), tank cap ($17), level sensor ($16) and coolant ($21). 
Jan 2015

114800 mi
Intake boot had a couple cracks and was replaced. 
Mar 2015

109000 mi

US $138
Starter failed -- replaced. 
Apr 2015

109300 mi

US $7
Minor oil leak -- replaced oil filter housing gasket. 
Oct 2016

124300 mi

US $936
Convertible top motor was noisy and struggling to work. Actuator arms were leaking, so I had them rebuilt by tophydraulics.com and replaced the motor. 
BMW Z4 in Vermont, United States
Nov 2014 - Apr 2017
Jun 2015

40000 mi

US $500
Control arms, control arm bushings 
BMW Z4 in Michigan, United States
Mar 2015 - Jun 2018
Sep 2015

70000 mi

US $549
Left rear wheel bearing was growling and was replaced 
BMW Z4 in Ontario, Canada
Aug 2008 - Sep 2014
May 2008

37654 mi
replace right front headlight assembly (under warranty) 
Jun 2009

40693 mi

C $1643
replace roof motor assembly that raises and lowers convertible top 
BMW Z4 in Washington, United States
- Feb 2008
Feb 2008

25 mi
Rear center brake lens cracked due to excess stress caused by retaining springs. Problem is recognized by bmw as factory fault and fixed under warranty free of charge. BMW goodwill will also fix outside of warranty for free. 
BMW Z4 in Illinois, United States
Jan 2008 - Mar 2011
Sep 2008

19008 mi
Failed convertible top motor replaced 
Feb 2009

27458 mi
Coolant temperature sensor on lower radiator hose shorted out and was replaced 
Sep 2010

40000 mi

US $500
FRONT CONTROL ARM BUSHINGS REPLACED 
BMW Z4 in Minnesota, United States
Jan 2011 - Jun 2012
Jul 2011

32000 mi

US $900
Windshield wiper and headlight sensor failed, replaced windshield and sensor 
May 2012

36000 mi

US $400
Cracked brake line 
BMW Z4 in Florida, United States
Feb 2010 - Nov 2010
Apr 2010

44700 mi

US $500
Erratic tire warning light, oil light stayed on after ignition was turned off, standard oil change, wiper blade replacement and 2 tires (rear), I'm getting almost 22,000 on the head for my Continental 3's, much lower than my 328ci 
BMW Z4 in Pennsylvania, United States
Dec 2010 - Apr 2011
Apr 2011

129000 mi
Needed convertible top motor when sold. 
BMW Z4 in Ontario, Canada
Oct 2010 - Mar 2013
Sep 2012

66340 mi

C $200
Replaced both the Intake Air Adjustment Unit/DISA Valve and the Lower Intake Boot due to wear 

Return to top

2004 BMW Z4 2dr Convertible

225-horsepower 3.0L I6 6-speed automated manual RWD

BMW Z4 in Florida, United States
Dec 2012 - Sep 2018
Jan 2013

92000 mi

US $550
I am having coolant temperature problems with the gauge moving from the center to red zone. 
Aug 2015

95000 mi

US $567
I needed a tune-up. 

Return to top

2004 BMW Z4 2dr Convertible

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

BMW Z4 in Florida, United States
May 2013 - Jun 2014
Dec 2013

77000 mi

US $160
Replace the alternator with a new Bosch unit . 
BMW Z4 in New Zealand
Apr 2012 - Jun 2018
May 2012

53940 mi

$200
Petrol cap locking actuator not working. Broken rear boot brake lens. Known fault recorded with the boot lens breaking due to retaining spring pressure overseas, however BMW NZ have no record of this being a problem here. 
May 2015

66340 mi

$300
faulty tamper alarm sensor on bonnet 
BMW Z4 in New Jersey, United States
Jan 2009 - Jun 2011
Mar 2009

46257 mi
Convertible motor failure 
BMW Z4 in Georgia, United States
Jan 2012 - Jun 2015
Apr 2012

53000 mi

US $700
Auto dimming rear view mirror broke 
Feb 2013

63200 mi

US $450
Thermostat housing 
Oct 2013

70200 mi

US $4300
Hydraulics for convertible top quit working Instrument cluster panel 
Sep 2014

76000 mi

US $100
Hydrolics for conververtible top 
BMW Z4 in California, United States
Dec 2014 - Jun 2018
Dec 2014

53000 mi

US $500
replaced worn accessory belts. Right headlight burned out 
Jan 2015

US $1000
Coolant leak. Replaced radiator, and expansion tank. 
Mar 2016

63000 mi

US $200
FRONT LOWER BODY PANEL HAD SEPARATED FROM THE FRAME. NEW CLIPS WERE REQUIRED TO RE-ATTACH IT. 
Dec 2017

76000 mi

US $235
Left headlight failed, and was replaced.  Also diagnosed two oil leaks, one from valve cover, and one from the oil pan. 
May 2018

78000 mi

US $1000
Oil leak. Oil pan gasket replaced. 

Return to top

2004 BMW Z4 2dr Convertible

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

BMW Z4 in Texas, United States
- Jan 2009
May 2006

28186 mi
Ignition coil replacement 
Jul 2006

30419 mi
"Sticky steering issue". Replaced complete EPS steering column assy, endcoded EPS and LWS control units w/ program 22.0. 
Jan 2009

55136 mi
After warranty expired but repaired a/c as good will. Defected IHKA. A/C clutch would not engage. Replaced IHKA and encode using prog. 2.32.1 
BMW Z4 in Malaysia
Jul 2011 - Aug 2011
Aug 2011

38440 mi

$150
compressor belt tensioner spring replaced 
BMW Z4 in Florida, United States
Oct 2010 - Jan 2011
BMW Z4 in Tennessee, United States
Apr 2013 - Jun 2018
Jun 2013

114000 mi

US $50
Check Engine Light - Cyl 02 misfire. Replaced plug (original) and Coil pack. 
Feb 2014

124600 mi
Dreaded P0743 (torque converter). Did initial diag and reset myself and SEL returned in about 30 miles. Took it to the shop, estimate is $700 to 1k. Right now runs and drives fine other than gas mileage dropping by .4 per gal. If it worsens might fix it. 
Feb 2015

144000 mi

US $50
Replaced leaky oil filter housing gasket, brittle oil pressure switch, and gasket ring. 
Apr 2015

148000 mi

US $615
Replaced SIM. 
Mar 2016

163000 mi

US $600
Soft top motor died. Replaced the motor with a new one but it is still slow to respond. It does work, just very slowly. 
Sep 2016

170000 mi

US $475
Idler pulley broke causing belt to snap and sever radiator hose. 
BMW Z4 in Texas, United States
Apr 2010 - Oct 2014
Jun 2011

101000 mi

US $164
Starter failed, replaced same 
BMW Z4 in Oregon, United States
Jun 2010 - Jun 2018
Nov 2015

76600 mi

US $945
Airbag sensor coded. Replaced driver side B-Piller Airbag Satellite Sensor Replaced one coil pack and all 6 spark plugs 
May 2016

81126 mi

US $1475
Top will not automatically go to down/up. Possible hydraulic or electric motor failure. Replaced Hydraulic Pump. 
May 2017

81300 mi

US $1228
Lower intake boot cracked. Coded P0171 lean fuel trim. Replaced lower intake boot. 
Nov 2017

82000 mi

US $10
Replaced windshield washer pump and grommet/filter. 
Mar 2018

83000 mi

US $17
Trunk dampers were shot causing trunk lid to close without restraint. Replaced trunk dampers 
Apr 2018

83541 mi

US $618
Starter failed. Replaced. 
BMW Z4 in Tennessee, United States
Jan 2010 - Jun 2011
Feb 2010

160000 mi

US $10000
Engine overheated and had to be completely replaced. 
BMW Z4 in Georgia, United States
Dec 2010 - Jun 2014
Dec 2010

55000 mi

US $400
replaced cracked coolant expansion tank and mountng bracket. 
Aug 2012

75000 mi

US $300
Replaced starter. I did not have to tow the car only because it was sitting in my driveway at the time. It would not make a sound when turning the ignition.  Replaced 1) leaking water hose and, 2) leaking thermostat and housing. 

Return to top

2004 BMW Z4 2dr Convertible

184-horsepower 2.5L I6 5-speed manual RWD

BMW Z4 in Connecticut, United States
Jan 2008 - Sep 2012
Dec 2008

28500 mi
No repairs since the purchase of the vehicle in August 2004. Silicone lubricant was used in Nov.'04 to correct a wind leak on the driver's side window that occurred at speeds above 40 mph. Problem solved! 
Dec 2009

35000 mi

US $1700
Service Engine light was on.Two faults were found;defective fuel breather valve and a defective instrument cluster that was not communicating with the engine computer.Steering no longer "sticky" or "binding". 
BMW Z4 in North Carolina, United States
Oct 2016 - Jun 2018
Jan 2017

US $1025
Oil pan gasket bad Vacuum leak 
Jun 2017

133000 mi

US $270
Convertible top hydraulic hinge seals broken. Top would not open or close. Removed top, sent hinge to be refurbished. After hinge seals fixed, reinstalled. 
Sep 2017

134000 mi
Electronic throttle control errors, car wouldn't stay on, throttle inoperable. Pulled battery, recharged, reinstalled. Throttle started working. 
Dec 2017

134000 mi

US $60
Battery dies frequently. Diagnostic at shop says the battery and alternator are fine, still trying to find phantom load. 
Apr 2018

134000 mi

US $180
Battery ultimately failed, still no cause of phantom power draw. 

Return to top

2003.5 BMW Z4

Engine not specified

BMW in New South Wales, Australia
May 2011 - Oct 2011
Jun 2011

47120 mi

A $1000
starter motor stopped working. couldnt start the car. 

Return to top

See TrueDelta's information for all Hatchbacks and Convertibles.
See TrueDelta's information for all BMW models.

2004 BMW Z4 Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2004 BMW Z4 problems occur, check out our car reliability stats.