2018 Bmw 330I: Reliability Data

Source: NHTSA — 37 complaints
37
Total Complaints
25,750mi
Median Mileage
ENGINE
Top Issue
0
Crash Reports

When Do Complaints Happen?

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

5,775 25th Percentile
25,750 Median Mileage
53,352 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE
11
UNKNOWN OR OTHER
6
FUEL/PROPULSION SYSTEM
4
ELECTRICAL SYSTEM
3
VEHICLE SPEED CONTROL
2
STRUCTURE:BODY
1
TIRES
1
VISIBILITY/WIPER
1
SERVICE BRAKES
1
STEERING
1

Severity Assessment

0
Crashes
4
Fires
1
Injuries
0
Deaths

Sample Complaint Reports

"I WAS ON THE CAPITAL BELTWAY OUTSIDE WASHINGTON DC GOING ABOUT 60 MPH AND MY SUNROOF SUDDENLY SHATTERED. IT WAS EXTREMELY SCARY BECAUSE IT SOUNDED LIKE A GUN SHOT GOING OFF. IT WAS A VERY HOT DAY, LOW 90S. LUCKILY I HAD JUST CLOSED THE SUN VISOR SO THE GLASS DID NOT POUR DOWN ON ME OR MY PASSENGER..."
"WAS ON A ROAD TRIP, DROVE 600 MILES PREVIOUS DAY. NEXT DAY EVENING, PIRELLI RUN FLAT TIRE BLOWS OUT ON A FREEWAY. I HAD JUST PASSED THE TOLL PLAZA AND WAS ACCELERATING TO MERGE WITH THE TRAFFIC. RUN FLAT REINFORCED SIDEWALLS SHOULD'VE ALLOWED THE TIRES TO BE USABLE EVEN AT 0 PSI BUT I EXPERIENCE..."
"SUNROOF EXPLODED WHILE I WAS DRIVING ON THE FREEWAY"

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