1997 Bmw 540I: Reliability Data

Source: NHTSA — 31 complaints
31
Total Complaints
75,000mi
Median Mileage
ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
Top Issue
0
Crash Reports

When Do Complaints Happen?

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

53,777 25th Percentile
75,000 Median Mileage
118,900 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
9
VEHICLE SPEED CONTROL
2
UNKNOWN OR OTHER
2
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
1
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR
1
ELECTRICAL SYSTEM:IGNITION
1
TIRES
1
ENGINE AND ENGINE COOLING:COOLING SYSTEM
1
AIR BAGS:SIDE/WINDOW
1
SUSPENSION:FRONT
1

Severity Assessment

0
Crashes
2
Fires
1
Injuries
0
Deaths

Sample Complaint Reports

"WHILE DRIVING AT 55 MPH ENGINE COMPARTMENT CAUGHT ON FIRE. INSURANCE INVESTIGATORS CLAIMED FIRE WAS DUE TO BRAKE FLUID BEING EXPELLED FROM ABS SYSTEM AND IGINITING EXHAUST MANIFOLD. *AK"
"CATALYTIC CONVERTERS FAILED. MJS"
"DELAMINATION/SEPARATION OF TIRE TREAD FROM CASEING-3 OF THE 4 TIRES ON THE CAR, SEVERE .( DOT NUMBER: LMT8AXBU TIRE SIZE: 225/55R/16 )"

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