1999 Bmw M coupe problems

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The BMW M Coupé and BMW M Roadster are high performance models of the BMW Z3 and Z4 coupés/roadsters produced by BMW M. The first generation was based on the Z3 and was produced between 1998 and 2002. The second generation was based on the Z4 and was produced between 2006 and 2008.

All models were produced in the BMW Spartanburg plant in the United States. Some major components— such as the engine and transmission— were imported from Germany.

First generation (1997–2002)

Z3 M Roadster

The M-Roadster E36/7 was introduced in 1997 as the high performance version of the BMW Z3. The most significant cosmetic difference between the M-Roadster, including the M-Coupe, is the substantially flared rear quarter-panels ("fender flares") and the correspondingly offset rear wheels. Additional external differences compared to the standard Z3 models included front and rear bumpers, gills, quad exhaust, trunk, and mirrors.

The standard Z3 models received a facelift in 1999. The appearance of the M was not changed

In the 6 years from 1997 to 2002, 15,322 M Roadsters were produced.

The M Roadster is electronically limited to a top speed of 250 km/h (155 mph). The curb weight is 1,420 kg (3,130.6 lb).

1999 Bmw M coupe

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Common 1999 Bmw M coupe problems

The BMW M Coupe, also known as the Z3M Coupe, is a high-performance vehicle produced from 1998 to 2002. While it is often regarded as an exciting car to drive, it has some common problems that potential buyers should be aware of.

  • Suspension Issues: The rear of the Z3M Coupe is known for being soft, which can lead to a less focused driving experience. To address this, many owners modify the suspension by installing aftermarket springs and shocks, such as KWV3 or KW clubsports and H&R coilover suspension kits. These modifications can improve the car's handling and make it more focused, but they may require professional installation and setup.
  • Anti-Roll Bar Problems: H&R anti-roll bars are a popular modification among Z3M Coupe owners, as they improve body control. However, they can negatively impact ride quality and may cause the suspension mounts to snap due to the extra load. To prevent this, some owners install kits to reinforce the mounts.
  • Brake System Limitations: The stock brakes on the Z3M Coupe are powerful and effective for road use. However, they may struggle when the car is driven on a track, as they can overheat and cause the brake pads to melt onto the discs. To prevent this, owners can upgrade to fast road/track pads, such as EBC yellowstuff, and add ducting to the brakes.
  • Chassis Weaknesses: The Z3M Coupe's chassis, which is based on the E36 3 Series, has inherent structural issues, particularly in more powerful versions like the Z3M Coupe. These weaknesses can lead to the rear subframe failing, especially after spirited driving. To reinforce the chassis, some owners have their cars' weaker points reinforced by independent shops, which can help prevent future breakages.

These common problems with the BMW M Coupe, along with the suggested fixes, are important for potential buyers to consider. While the car offers an exciting driving experience, it may require some modifications and reinforcements to ensure optimal performance and longevity.

1999 Bmw M coupe engine

What is the most common problem with the BMW Z3?

Common complaints about the BMW Z3 include oil leaks, faulty sound systems, and leaking power steering fluid.

What engine is in the BMW M Coupe?

BMW S54 straight-six engine

Engine. The M Coupe and M Roadster are powered by the BMW S54 straight-six engine from the E46 M3. The engine has fly-by-wire throttle and double VANOS (variable valve timing). In most countries, the engine is rated at 252 kW (338 hp) at 7,900 rpm and 365 N⋅m (269 lb⋅ft) at 4,900 rpm- the same outputs as in the M3.

Is the M Coupe a Shooting Brake?

The E46 M3's high-revving inline-six, better known as the S54, also found its way under the hood of the Z3-based M Roadster and M Coupe. Despite its name, the latter model is better described as a hatchback or shooting brake, and its shape earned it the nickname "Clown Shoe."

How reliable is a BMW Z3?

Elsewhere, the Z3 is very practical, generally reliable and the parts supply is excellent, as much of the car was shared with the contemporary 3 Series. There is no shortage of Z3s so it's a buyer's market.

What engine is in the BMW M Coupe?

BMW S54 straight-six engine

Engine. The M Coupe and M Roadster are powered by the BMW S54 straight-six engine from the E46 M3. The engine has fly-by-wire throttle and double VANOS (variable valve timing). In most countries, the engine is rated at 252 kW (338 hp) at 7,900 rpm and 365 N⋅m (269 lb⋅ft) at 4,900 rpm- the same outputs as in the M3.

What is the most common problem with the BMW Z3?

Common complaints about the BMW Z3 include oil leaks, faulty sound systems, and leaking power steering fluid.

Are used BMW Z3 reliable?

In general all Z3 engines and transmission combinations are long lasting and reliable but... The Z3 has lots of little issues - check the maintenance history and closely inspect each car: rear subframe - this one can be major $$$ but is easy to check for - read some of the long subframe thread sticky.

Are BMW Z3 prone to rust?

Now that the average M Coupe and M Roadster are 20-25 years old, naturally they can suffer with corrosion underneath. The most common area we regularly see corrosion growing in is the Z3 Sills & Jacking Points. The Z3 chassis has 2 Sill Panels: Outer Sill Panel (bolted, body-colour, available to purchase from BMW).

1999 Bmw M coupe car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Bmw M coupe problems, we found that the most common problems with these 2023 model year vehicles are:

  • Structure problems
  • Power train problems
  • Seats problems
  • Suspension problems
  • Equipment problems

The graph below shows statistics for all 1999 Bmw M coupe vehicle components and the number of complaints received.

1999 Bmw M coupe complaints

The NHTSA has received 12 complaints about various vehicle components related to the 1999 Bmw M coupe.

2013-01-03

SUSPENSION,STRUCTURE PROBLEM

  • Date Of Incident: 2013-01-03
  • VIN: WBSCM9332XL
  • Components: SUSPENSION,STRUCTURE
  • Summary: REAR SUBFRAME IS BEGINNING TO SEPARATE FROM THE BODY OF THE VEHICLE, POSSIBLY CONTRIBUTOR TO UNSAFE AND UNSTABLE HANDLING. FIRST NOTICED AFTER HAVING SERVICE 2 INTERVAL DONE IN 2009, BUT UPON MORE RESEARCH ONLINE MANY Z3 OWNERS ARE HAVING THIS SAME ISSUE REGARDLESS OF MODEL OR HOW IT'S DRIVEN. BROKEN SPOT WELD UNDERNEATH THE VEHICLE. TRYING TO CATCH IT EARLY ON BEFORE IT GETS WORSE. *TR
2008-05-31

STRUCTURE PROBLEM

  • Date Of Incident: 2008-05-31
  • VIN: WBSCM9339XL
  • Components: STRUCTURE
  • Summary: SUBFRAME TEAR, SEPARATING OF TRUNK FLOOR FROM RAILS. *TR
2006-12-28

STRUCTURE PROBLEM

  • Date Of Incident: 2006-12-28
  • VIN: WBSCM9335XL
  • Components: STRUCTURE
  • Summary: THE 1999 BMW M COUPE I OWN IS SUFFERING FROM A REAR SUBFRAME FAILURE. THE DIFFERENTIAL MOUNT AND REAR SUBFRAME ARE BECOMING DISCONNECTED FROM THE FRAME. VISUAL INSPECTIONS HAVE SHOWN THE SEPARATION. THIS WILL LEAD TO THE REAR DIFFERENTIAL BECOMING TOTALLY DISCONNECTED FROM THE CAR, LEADING TO A POSSIBLE ACCIDENT. THIS ISSUE IS CURRENTLY UNRESOLVED AS THE FIX WILL BE THOUSANDS OF DOLLARS. THERE ARE NUMEROUS DOCUMENTED CASES OF SUBFRAME FAILURES ON BMW Z3, M ROADSTER AND M COUPE MODELS. THIS IS OBVIOUSLY A MANUFACTURER DEFECT THAT HAS NO BEEN ADDRESSES BY THE MANUFACTURER. THIS PRESENTS A SERIOUS SAFETY ISSUE. *NM
2006-08-29

STRUCTURE PROBLEM

  • Date Of Incident: 2006-08-28
  • VIN: WBSCM9338XL
  • Components: STRUCTURE
  • Summary: THERE IS A CRASH RISK AS THE CAR'S SUBFRAME IS RAPIDLY TEARING AND THIS DESIGN FLAW COULD EVENTUALLY LEAD TO A LOSS OF CONTROL LEADING TOWARDS A CRASH. THE CAR INVOLVED IS A BMW M COUPE 1999. *NM
2005-09-17

STRUCTURE PROBLEM

  • Date Of Incident: 2005-08-20
  • VIN: 4USCK533XXL
  • Components: STRUCTURE
  • Summary: REAR SUBFRAME WELDS ARE FAILING. AS A RESULT, THE FLOOR IS TEARING FROM THE SUBFRAME. THE FOLLOWING WEBSITE CONTAINS DESCRIPTIONS AND PHOTOS OF MANY EXAMPLES OF THIS VERY ISSUE. HTTP://WWW.THELARGEGLASS.COM/BMW/SUBFRAME/. *JB
2004-09-19

POWER TRAIN,STRUCTURE PROBLEM

  • Date Of Incident: 2004-09-19
  • VIN: WBSCM9330XL
  • Components: POWER TRAIN,STRUCTURE
  • Summary: DIFFERENTIAL BRACKET AND SUBFLOOR ARE CRACKING AND TEARING APART AT THE WELD SEAMS AND SPOT WELDS. COULD LEAD TO UNPREDICTABLE HANDLING, ESPECIALLY DURING REGULAR DRIVING TURNS/HIGHWAY SPEEDS (INSTABILITY, ROUGH SHAKING, LOOSE CHASSIS KNOCKING). *AK
2004-06-10

STRUCTURE PROBLEM

  • Date Of Incident: 2002-06-08
  • VIN: WBSCM9333XL
  • Components: STRUCTURE
  • Summary: SEPARATION OF FLOOR PAN WELDS APPEARS TO BE A COMMON PROBLEM IN AN UNCOMMON VEHICLE. I'M UNABLE TO PROVIDE A CAUSE, SINCE I AM THE THIRD OWNER, AND HAVE NEVER DRIVEN THE CAR AT IT'S INTENDED LIMITS. TO MY KNOWLEDGE, IT HAS NEVER BEEN RACED. SO FAR, I HAVE NOT REPAIRED THE PROBLEM.*AK
2004-03-15

STRUCTURE,EQUIPMENT PROBLEM

  • Date Of Incident: 2004-01-01
  • Components: STRUCTURE,EQUIPMENT
  • Summary: SERIOUS CRACKING ALONG MULTIPLE BODY SEAMS IN THE ENGINE COMPARTMENT IN STRUT TOWER AREA AND IN THE REAR IN THE LOWER SUBFRAME AREA. *AK
2004-02-13

POWER TRAIN PROBLEM

  • Date Of Incident: 2004-02-01
  • Components: POWER TRAIN
  • Summary: REAR DIFFERENTIAL MOUNT CRACKS. SUBFRAME SEPARATING FROM THE FLOOR OF TRUNK, AND TRUNK BEING TEARED OUT BY SUBFRAME. MAJOR ISSUE!!!!*AK
2003-02-28

AIR BAGS PROBLEM

  • Date Of Incident: 2003-02-25
  • VIN: WBSCM9333XL
  • Components: AIR BAGS
  • Summary: RECURRING AIRBAG LIGHT. *JB
2003-02-28

SEATS PROBLEM

  • Date Of Incident: 2003-02-28
  • Components: SEATS
  • Summary: SEAT SHIFTS IN DIRECTION OF DECELERATION (BRAKE) AND ACCELERATION (GAS). FEELS LIKE SEAT WILL COME OFF ITS RAILS. *JB
1999-10-27

LATCHES/LOCKS/LINKAGES,SEATS PROBLEM

  • Date Of Incident: 1999-02-04
  • VIN: WBSCM9335XL
  • Components: LATCHES/LOCKS/LINKAGES,SEATS
  • Summary: WHEN BRAKES ARE APPLIED THE FRONT SEATS SLIDE FORWARD APPROXIMATELY ONE HALF INCH, WHEN BRAKE PRESSURE IS RELEASED SEATS SLIDE BACK INTO PLACE. VEHICLE TRAVELING AT 60 MPH HIT A BUMP IN ROADWAY AND THE DRIVER'S SIDE, CLOSED AND LOCKED DOOR UNLATCHED AND OPEN ENOUGH FOR THE AIR TO RUSH IN AND THE ROAD COULD BE SEEN THROUGH THE OPENING. *AK *YC
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More sources of information about 1999 Bmw M coupe problems:

1999 Z3 M coupe reliability
1999 Z3 M coupe reliability
https://www.bimmerforums.com/forum/showthread.php?1876863-1999-Z3-M-coupe-reliability

Aug 8, 2012 ... I know that this has the S52 motor which has been known to be highly reliable, but I would like to get some first hand experience with the cars ...

What to watch out for on a Z3M Roadster - Page 1 - M Power ...
What to watch out for on a Z3M Roadster - Page 1 - M Power ...
https://www.pistonheads.com/gassing/topic.asp?h=0&f=181&t=808317

Feb 7, 2010 ... I'm considering a BMW Z3M Roadster (the plan ... Are there any common problems / faults? ... I had a z3m coupe, S50 engined, 1999 model. In terms ...

What are the most common problems a Z3 owner can worry about?
What are the most common problems a Z3 owner can worry about?
https://www.bimmerforums.com/forum/showthread.php?717925-What-are-the-most-common-problems-a-Z3-owner-can-worry-about

Mar 30, 2007 ... Not something to waste energy and ulcer time on. = Mike. '02 M Coupe. SexualChocolate said: 03-31-2007 01:56 PM. An addiction that will last a ...

Airbag warning light - zroadster.net
Airbag warning light - zroadster.net
https://www.zroadster.net/forum/viewtopic.php?t=22519

Oct 17, 2009 ... The most common cause of an airbag light in a z3 is an intermittent connection under one of the seats. Current...1998 ///M Coupe Image

2000 M Roadster, reliable?
2000 M Roadster, reliable?
https://www.bimmerforums.com/forum/showthread.php?614942-2000-M-Roadster-reliable

Oct 11, 2006 ... He has heard that prior to '01, the M Roadster was not a reliable car because the engine was bad. ... there is NO problem ... * FS BMW Z3 Coupe ...

Other years of Bmw M coupe

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