2003 BMW Z4 Problems and Repair Histories
2003 BMW Z4 problems reported via the Car Repair History and Car Reliability Surveys
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BMW Z4
2003 BMW Z4s for which no problems have been reported are not displayed. So the 2003 BMW Z4 problems and repair histories you see here should not be used to infer car problem frequency.
For 2003 BMW Z4 problem frequency, check the Car Reliability Survey result. For the problems behind the score, check the 2003 BMW Z4 problems and repair histories that follow it.
BMW Z4 Reliability through December 31, 2012
General NotesModels and statistics marked with an asterisk (*) have very low sample sizes. These results, visible only to logged-in members, provide only a rough estimate of car reliability.Any result under 20 repair trips per 100 cars is likely a result of the small sample size, and should be expected to increase to 20 or so in future updates.
New models often start out with high repair rates, and then improve as the manufacturer identifies and addresses common problems. MethodologyOnly successfully completed repairs are currently included in the analysis. Routine maintenance, most wear items, recalls, and problems fixed with just a reflash or warning light reset are not included.
| Year | Make/Model | Trips/Year/100 Cars | Compared to all models for the same year | |
| 2003 | BMW Z4 | 39 Z4s, 9.9 months of data per Z4, average 67600 miles Like other sports cars, low average odometer reading.53 |
Fewest Trips
Most Trips
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see reported repairs |
Non-members can see only ten 2003 BMW Z4 problems and repair histories. Log in or join us to see them all.
Repair costs are in local units.
2003 BMW Z4 2dr Convertible
225-horsepower 3.0L I6 6-speed manual RWD
| BMW Z4 in Great Britain | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| May | 2004 | 150 | Rear coilover springs x2 | |
| May | 2008 | 0 | Cracked 3rd brake light due to retaining springs being too strong. | |
| Nov | 2009 | 1220 | Electric Hood motor | |
| Dec | 2009 | 500 | Fuel pump failed on freeway. Fuel pump failure. Scary.. | |
| Jan | 2010 | 350 | Driver Side Window Regulator | |
| BMW Z4 in South Carolina, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Sep | 2011 | 74000 | First odometer entry | |
| Apr | 2012 | 80000 | 100 | Replace belts |
| Jun | 2012 | 82000 | 350 | Replace cracked MAF boot Replace coil |
| Sep | 2012 | 84000 | 40 | Tighten battery cables |
| BMW Z4 in Texas, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jun | 2009 | 3500 | Replaced steering column due to binding. | |
| BMW Z4 in Texas, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Apr | 2009 | 75000 | First odometer entry | |
| May | 2009 | 76000 | 0 | Rear brake pads were worn and replaced. Also had accessory belt replaced. |
| Oct | 2009 | 82000 | 150 | Large evaporative leak code 0455 - fixed by replacing the gas cap and some vent hoses. |
| Nov | 2011 | 104000 | 270 | Original alternator died at 104,000. Replaced with remanufactured alternator, replacement was easy DIY. |
| May | 2012 | 109300 | 100 | Very slightly leaky oil separator valve, replaced with ancillary hoses. Pretty simple once I figured out how it's assembled. |
| Dec | 2012 | 115000 | 150 | Replaced belts and pulleys, engine, gearbox and differential oil. |
| Mar | 2013 | 118000 | 0 | Small oil leak at oil pan gasket; replaced gasket. Proper replacement requires supporting the engine from the top and dropping the subframe - time consuming. |
| BMW Z4 in Connecticut, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| May | 2009 | 41000 | First odometer entry | |
| Aug | 2010 | 58000 | 530 | Speedometer and all related functions stopped working. Warning lights for DSC, ABS, Brake, and TPMS. Returned for repair of broken wheel speed sensor. New sensor did not fix problem, further diagnosis found shorted out wire was the original cause. 3 more days of diagnosis time plus one day for the actual repair. |
| May | 2011 | Most recent odometer entry. | ||
| BMW Z4 in North Carolina, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Apr | 2009 | 70000 | First odometer entry | |
| Jun | 2009 | 80000 | 50 | Steering column replaced due to binding |
| Nov | 2009 | Most recent odometer entry. | ||
| BMW Z4 in Minnesota, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Apr | 2009 | 13000 | First odometer entry | |
| Jun | 2009 | 38000 | 3 | broken hose clamp on engine air intake was fixed |
| Jul | 2011 | 45000 | 260 | replaced coil springs in rear suspension |
| Jun | 2012 | 50000 | 110 | replace front control arm bushings |
| Mar | 2013 | 53000 | Most recent odometer entry. | |
2003 BMW Z4 2dr Convertible
225-horsepower 3.0L I6 6-speed automated manual RWD
| BMW Z4 in Oregon, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Oct | 2009 | 0 | First odometer entry | |
| Jul | 2012 | 52700 | 212 | radiator hose |
| Sep | 2012 | 56000 | Most recent odometer entry. | |
| BMW Z4 in Florida, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Apr | 2011 | 11570 | 4 TPMS modules need to be replace, Brake pressure sensor need to be replaced Airbag light is on. Had to spend 135 to diagnose the problem and they told me it was a loose wire. The fixed it & still had the same problem. car ws in shop for 6 days and no loaned car while they tried to determine problem was a faulty mat AM going to do work myself Headlight housing cracked. BMW told me have to replace headlight housing. Bought aftermarket headlights that are better and for $500 Radio volume button does not work. was told have to replace radio. bought aftermarket radio nd installed. Better features and sound Rear side marker light fell into car fender Thrid Brake light cracked | |
| Mar | 2013 | 28000 | Most recent odometer entry. | |
2003 BMW Z4 2dr Convertible
225-horsepower 3.0L I6 5-speed shiftable automatic RWD
| BMW Z4 in South Carolina, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Feb | 2010 | 37000 | First odometer entry | |
| Jun | 2010 | 41000 | 0 | Chronic right front turn signal failure |
| Oct | 2010 | 42000 | 0 | Replaced right front turn signal socket. Now the headlight continually fills with condensation |
| Apr | 2011 | 45000 | 2800 | Hydraulic pump for top failed. |
| Mar | 2013 | 51000 | Most recent odometer entry. | |
| BMW Z4 in Nova Scotia, Canada | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Apr | 2010 | 76880 | First odometer entry | |
| Jun | 2010 | 78120 | 120 | Sec. air system (2760) |
| Sep | 2012 | 83080 | Most recent odometer entry. | |
| BMW Z4 in California, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| May | 2010 | 25000 | First odometer entry | |
| Jun | 2010 | 25000 | 300 | |
| Jul | 2010 | 25700 | 7000 | Three wheels cracked, and tires required replacing. |
| Jun | 2011 | Most recent odometer entry. | ||
| BMW Z4 in Quatar | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jan | 2010 | 27900 | First odometer entry | |
| Mar | 2010 | 31000 | 2700 | Replacement of fuel injection - 6 nozzles Replacement of brake discs and pads. |
| Jun | 2011 | Most recent odometer entry. | ||
| BMW Z4 in Georgia, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jul | 2009 | 47000 | First odometer entry | |
| Oct | 2009 | 49000 | 617 | Passenger door latch no longer sensed door was closed. Door would not lock and window stayed down as if door were open. Entire latch assembly had to be replaced. |
| Apr | 2010 | Most recent odometer entry. | ||
2003 BMW Z4 2dr Convertible
184-horsepower 2.5L I6 6-speed automated manual RWD
| BMW Z4 in Ohio, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jun | 2009 | 52000 | First odometer entry | |
| Jul | 2009 | 53000 | 50 | Replaced broken cup holder |
| Oct | 2009 | 56000 | 80 | Replaced front windshield cowl |
| Dec | 2012 | 74000 | Most recent odometer entry. | |
| BMW Z4 in Florida, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jul | 2009 | 26000 | First odometer entry | |
| Aug | 2009 | 27000 | 1534 | Convertible top motor went out. |
| Mar | 2010 | Most recent odometer entry. | ||
| BMW Z4 in North Carolina, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Nov | 2009 | 61000 | First odometer entry | |
| Jan | 2010 | 63000 | 263 | Replace dead battery, Replace air intake tube that cracked causing whistle |
| Aug | 2010 | 72000 | 700 | Replaced Right Rear wheel Bearing |
| Apr | 2013 | 97000 | Most recent odometer entry. | |
2003 BMW Z4 2dr Convertible
184-horsepower 2.5L I6 5-speed shiftable automatic RWD
| BMW Z4 in Oregon, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Dec | 2009 | 26000 | First odometer entry | |
| Mar | 2011 | 31000 | 100 | cable connecting outside door handle broke (Bowden cable) and had to be replaced. Had to remove entire door handle and interior panels to do so |
| Mar | 2013 | 35000 | Most recent odometer entry. | |
| BMW Z4 in British Columbia, Canada | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Mar | 2011 | 21700 | First odometer entry | |
| Dec | 2011 | 23560 | 0 | main computer acting up..cleared it of all messages and seems ok again. small squeal since brake pads last fixed |
| Jun | 2012 | 28520 | 67 | Convertible top motor failed and squealing brake pads changed for ceramic which fixed problem. |
| Mar | 2013 | 34100 | Most recent odometer entry. | |
| BMW Z4 in California, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| May | 2010 | 36000 | First odometer entry | |
| Oct | 2010 | 45000 | 1000 | New rear brake pads and rotors. |
| Jan | 2013 | 75000 | 300 | Engine mounts replaced |
| BMW Z4 in Virginia, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Apr | 2009 | 63000 | First odometer entry | |
| Aug | 2010 | 67000 | 35 | Faulty Coil on Plug (COP) on cylinder no. 5. Replaced with new COP |
| Nov | 2011 | 67500 | 150 | Coolant leak. Replaced both hoses and coolant temp sensor. |
| Mar | 2013 | 69000 | Most recent odometer entry. | |
| BMW Z4 in Victoria, Australia | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Mar | 2010 | 35960 | First odometer entry | |
| Apr | 2010 | 35960 | 300 | Replaced DISA valve |
| Jun | 2011 | Most recent odometer entry. | ||
| BMW Z4 in North Carolina, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jun | 2011 | 75000 | First odometer entry | |
| Jul | 2011 | 76000 | 1200 | New electric motor to raise/lower convertible top |
| Aug | 2012 | 61000 | 475 | Main gasket around front windshield had aged in the sun |
| Dec | 2012 | 56000 | Most recent odometer entry. | |
| BMW Z4 in Virginia, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jul | 2011 | 86000 | First odometer entry | |
| Aug | 2011 | 88000 | 325 | replaced radiator, expansion tank, and lower radiator hose with aftermarket parts. |
| Sep | 2012 | 105000 | Most recent odometer entry. | |
2003 BMW Z4 2dr Convertible
184-horsepower 2.5L I6 5-speed manual RWD
| BMW Z4 in Utah, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Aug | 2009 | 56000 | First odometer entry | |
| Oct | 2012 | 89300 | 790 | Leaking Radiator |
| Mar | 2013 | 94000 | Most recent odometer entry. | |
| BMW Z4 in Washington, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jun | 2007 | 0 | Instrument cluster fault, replaced - covered by warranty. | |
| Dec | 2007 | 175 | Cracked 3rd brake light (due to cold). | |
| Mar | 2010 | Most recent odometer entry. | ||
| BMW Z4 in California, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Aug | 2010 | 128000 | First odometer entry | |
| Sep | 2012 | 165000 | 300 | replaced left and right front control arm bushings left and right sway bars: location points of attachment were cracked, requiring spot welds on both sides. |
| Mar | 2013 | 172000 | Most recent odometer entry. | |
| BMW Z4 in Virginia, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Oct | 2007 | 30 | Replace intake hose | |
| Jan | 2008 | 900 | Replace Air Conditioner Compressor | |
| Mar | 2008 | 500 | Replace Convertible Top Motor | |
| BMW Z4 in South Carolina, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Sep | 2010 | First odometer entry | ||
| Sep | 2010 | 200 | I can only select one radio button?? What if two things are broken? Bad alternator. Bad convertible top motor- not repaired 3 weeks apart | |
| Aug | 2012 | 165700 | 3000 | Bad fuel injectors. All replaced. Leak in coolant fluid lines Engine thermostat faulty, replaced. |
| Mar | 2013 | 183000 | Most recent odometer entry. | |
| BMW Z4 in Puerto Rico | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jul | 2010 | 72000 | First odometer entry | |
| Sep | 2010 | 82000 | 1400 | Replace right rear bearing. Driver door had rattle. dealer pulled panel and found bolt from power window motor had come out and fallen into bottom of door. Dealer said it was not under warranty and $400 ~$600 cost to fix it. |
| Jan | 2011 | 89000 | Most recent odometer entry. | |
| BMW Z4 in Virginia, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Feb | 2010 | 46000 | First odometer entry | |
| Jul | 2010 | 52000 | 140 | Air bag light came on. Problem was fault triggered by mat in passenger's seat. |
| Apr | 2011 | 56000 | 570 | SRS light was on, caused by fault in passenger's seat sensor mat. Installed bypass so car thinks passenger's seat is always occupied. Then had light reset by a shop. Motor for convertible top seized. Will be replacing it myself. Parts total about $500. |
| BMW Z4 in Florida, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Apr | 2010 | 83000 | First odometer entry | |
| Jun | 2010 | 83000 | 8000 | Expansion tank cracked, R&R expansion tank and water hoses replaced rotors and pads Windshield cover cracked and deformed, R&R Winshield cover Driver's door leaking, reatached door membrane. Soft top drainage clog, cleaned drains Front brake rubber lines R&R with braided stainless steel Three water hoses R&R at the same time that the expansion tank valve head cover leaking oil R&R cover seal |
| Aug | 2010 | 83000 | 500 | Soft top electro hydraulic motor burn out due to water intrusion. This is the second time that the E/H unit has to be replaced due waterd damage |
| Feb | 2011 | 88000 | 90 | Head light front auto leveling sensor link broke off. R&R sensor and adjusted head light Replaced soft top electro-hydraulic motor |
| Jun | 2011 | 94000 | 200 | Disa valve |
| Aug | 2011 | 96500 | 0 | Soft top hydroelectric motor stopped working due to water intrusion, this would be the fourth unit installed |
| Dec | 2011 | 99000 | 1000 | Engine oil filter housing "o" ring replaced due to a leak Transmission shaft and linkage seal replaced due to a leak |
| Jun | 2012 | Most recent odometer entry. | ||
| BMW Z4 in Pennsylvania, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Mar | 2010 | 46000 | First odometer entry | |
| May | 2010 | 47000 | 500 | Two broken rear springs replaced |
| Dec | 2012 | 58000 | Most recent odometer entry. | |
| BMW Z4 in Michigan, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Sep | 2009 | 40 | replaced boot from intake to throttle body | |
| Jul | 2010 | 62000 | 1600 | Convertible top motor and drive belt replacement |
| Feb | 2011 | 63700 | 145 | Replaced cooling expansion tank and hoses |
| Sep | 2011 | 68000 | 1500 | Convertible top motor leaking fluid. Replaced seals for hydraulic lines. |
| Mar | 2012 | 69000 | 200 | Replaced DISA in intake. |
| Aug | 2012 | 71500 | 1000 | HVAC control panel was replaced Seat sensor not working causing airbag light |
| Sep | 2012 | 72000 | 530 | replaced front control arms including ball joints and control arm bushings as well as sway bar end links |
| Mar | 2013 | 73000 | Most recent odometer entry. | |
| BMW Z4 in New York, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Apr | 2009 | 22000 | First odometer entry | |
| Aug | 2010 | 27000 | 607 | Airbag warning light came on. Took to 2 independent repair shops but they could not repair as their computer would not allow reflash. Took to dealer who installed airbag sensor, reflashed computer and problem solved for over $600. |
| Jun | 2012 | 31000 | Most recent odometer entry. | |
| BMW Z4 in Manitoba, Canada | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| May | 2011 | 39680 | First odometer entry | |
| Mar | 2012 | 52700 | 8 | Seatback wouldn't stay in position, purchased new fitment pins and reinstalled, seems good now |
| Mar | 2013 | 65720 | Most recent odometer entry. | |
| BMW Z4 in California, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jul | 2010 | 65000 | First odometer entry | |
| Dec | 2010 | 70000 | 55 | Started after sitting a few days, severe engine knocking and vibrations occurred. Might have been ignition coil failure in one cylinder. When drive to shop, engine ran fine. Shop inspected; I decided not to replace since holidays/$ short. |
| Sep | 2011 | 79000 | 0 | Rain sensing wipers had never worked since I bought car @ 23000mi. Sensor had separated from glass, only way to fix was new windshield & I didn't. Recently my windshield got large crack and insurance replaced, which also fixed rain sensor! |
| Jul | 2012 | 91000 | 175 | Crack in coolant expansion tank. Had to replace tank and associated parts. |
| Mar | 2013 | 97000 | Most recent odometer entry. | |
| BMW Z4 in Tennessee, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Sep | 2010 | 72000 | First odometer entry | |
| Oct | 2010 | 73000 | 400 | Windshield Gasket, dry rotted and cracked with pieces falling out. New part ordered from manufacturer in Germany. |
| Aug | 2011 | 78000 | 469 | Starter totally failed and was replaced. |
| Oct | 2011 | 78000 | 350 | Crack in the Fuel Injection rail leaking gas onto the intake manifold. |
| Dec | 2011 | Most recent odometer entry. | ||
| BMW Z4 in Connecticut, United States | ||||
| Month | Year | Odometer (in miles) |
Cost | Problem/Repair Description |
| Jul | 2012 | 126000 | First odometer entry | |
| Sep | 2012 | 132000 | 2300 | Stability control unit went, needed a new unit installed, software update |
| Dec | 2012 | 134000 | 2800 | stabilizer bar was broken, needed new front shocks, both front wheels were bent and not able to be trued. required a four wheel alignment, new tires for all four wheels |
Expert 2003 BMW Z4 Repair Advice
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