2018 BMW 430iProblems, recalls & complaints

NHTSA has logged 36 owner complaints about the 2018 BMW 430i, most often about the engine. It is covered by 1 safety recall, and for recall 17V-507 the manufacturer reports only 97% of affected cars repaired.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through August 5, 2026. Updated daily.

Complaints by system

Where the 2018 BMW 430i has problems

36 complaints grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Engine144
Engine and engine cooling80
Electrical system51
Seat belts40
Seats32
Air bags21
Fuel/propulsion system21
Power train20
Service brakes21
5 other systems51

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

1 recall

2018 BMW 430i recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

97%repaired · 2019 Q1

Seat belts: front

Recall 17V-507 · Aug 16, 2017 · 67 vehicles · 65 repaired

Risk. If the vehicle has an incompatible vehicle-sensitive locking mechanism, the seat belt may not restrain the seat occupant in the event of a crash, increasing…

Problem, fix and repair progress →

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with BMW.

Best & worst years

2018 vs. every other 430i year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the 430i median. How we score

'17'18'19'20'21'22'23'24'25'26
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
1 investigation

NHTSA defect investigations

Federal investigations that included the 2018 BMW 430i, and the recalls they led to.

  1. Desiccated Air Bag Inflator RuptureEA21002 · still open
    Open
In owners' words

What 430i owners report

Recent engine complaints filed with NHTSA, shortened. Personal details are removed.

The car has experienced numerous coolant leaks according to the dealer and independent authorized service shops including: - turbo coolant lines - oil filter housing - auxiliary radiator - coolant pump - heat management module - upper radiator hose - expansion tank hose - various other coolant…
Complaint 11738943 · May 20, 2026
2018 430i x drive gran coupe oil filter housing failed. Car started to overheat while driving and the infotainment system indicated that the car is overheating and started to decelerate.
Complaint 11723706 · Mar 11, 2026
Disconnect coupling on cylinder head broke caused loss of coolant from engine. Overheated my Car damaged the engine and the car did accelerate when I was crossing a highway almost causing a collision
Complaint 11679358 · Aug 8, 2025

Own a 2018 430i?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.