"How reliable is the 2008 Bmw 135I?"

"Based on 62 NHTSA complaints, the 2008 Bmw 135I has a median complaint mileage of 43050 miles. The most common issue is AIR BAGS."

"What are common problems with the 2008 Bmw 135I?"

"The most frequently reported component in NHTSA complaints for the 2008 Bmw 135I is AIR BAGS, accounting for a significant portion of the 62 total complaints filed."

2008 Bmw 135I: Reliability Data

Source: NHTSA — 62 complaints

Total Complaints

43,050mi

Median Mileage

AIR BAGS

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

11,750 25th Percentile

43,050 Median Mileage

67,625 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

AIR BAGS

FUEL SYSTEM, GASOLINE

FUEL/PROPULSION SYSTEM

WHEELS

ENGINE

ELECTRICAL SYSTEM

EXTERIOR LIGHTING

SEAT BELTS

EXTERIOR LIGHTING:TAIL LIGHTS

TIRES

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"I WAS GOING APPROX. 65MPH IN 5TH GEAR IN MY 2008 BMW 135I COUPE WHEN THE CAR STUTTERED AND I GOT A SERVICE ENGINE SOON LIGHT. BROUGHT MY CAR TO BMW SERVICE AND MY SERVICE ADVISOR TOLD ME THAT I HAVE AN ISSUE WITH MY FUEL PUMP AND IT NEEDS TO BE REPLACED. THE CAR ONLY HAS AROUND 5000 MILES ON IT. *..."

"BOUGHT 2008 BMW 135I IN 7/2008. WITHIN FIRST WEEK OF OWNERSHIP MESSAGE CAME UP STATING "ENGINE MALFUNCTION, REDUCE POWER" CAR HAS BEEN IN NUMEROUS OCCASIONS-EACH TIME BMW ASSURES PROBLEM IS TAKEN CARE OF. REASONS GIVEN FUEL PUMP, INJECTORS, GAS ISSUE AND LASTLY ADJUSTMENT NOT DONE AT FACTORY AS IT ..."

"HIGH PRESSURE FUEL PUMP FAILURE ON 2008 BMW 135I WITH N54 3.0L TURBO ENGINE. SYMPTOMS WERE LONG CRANKS PRIOR TO STARTING. REPLACED UNDER WARRANTY. *TR"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28