NHTSA lists 1 safety recall and 6 owner complaints for the 2018 BMW M4. Most complaints involve fuel/propulsion system (4) and back over prevention (1). The EPA rates it 19–20 mpg combined.
BMW of North America, LLC (BMW) is recalling certain 2018 430i, 430i xDrive, 440i, 440i xDrive, and M4 convertible vehicles. The Emergency Locking Retractors (ELR) within the front seat belt assemblies may have been produced with incompatible vehicle-sensitive locking mechanism housings.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“The fuel tank was leaking a substantial amount of fuel. Yes it is. Our safety was put at risk due to the fuel leak. Any small spark, overheating or if somebody threw a cigarette butt out of their window could have ignited our car. BMW informed me to immediately cease driving the car and bring to the dealership right away. Problem was confirmed by dealership as stated on the attached invoice. No, no warning or indicator lights were present.”
“The contact owns a 2018 BMW M4. The contact stated that while reversing, the rear-view camera became inoperable, preventing the contact from safely reversing the vehicle. The contact referenced NHTSA Campaign Number: 19V684000 (Back Over Prevention) as a possible cause for the failure; however, the VIN was not included in the recall repair. The dealer was notified of the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 61,000.”
“CRANK HUB ISSUE”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| M4 Convertible Man 6-spd, 6 cyl, 3.0 L, Turbo · Rear-Wheel Drive | 17 | 25 | 20 | $3,850 | 450 |
| M4 Coupe Auto (AM-S7), 6 cyl, 3.0 L, Turbo · Rear-Wheel Drive | 17 | 24 | 20 | $3,850 | 450 |
| M4 Coupe Man 6-spd, 6 cyl, 3.0 L, Turbo · Rear-Wheel Drive | 17 | 25 | 20 | $3,850 | 439 |
| M4 DTM Champions Edition Auto (AM-S7), 6 cyl, 3.0 L, Turbo · Rear-Wheel Drive | 17 | 24 | 20 | $3,850 | 450 |
| M4 Convertible Auto (AM-S7), 6 cyl, 3.0 L, Turbo · Rear-Wheel Drive | 16 | 22 | 19 | $4,050 | 481 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
1 safety recall as of Nov 9, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 6 complaints with NHTSA. The most-cited components are fuel/propulsion system (4), back over prevention (1), engine (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2018 BMW M4 at 19–20 mpg combined, depending on engine and drivetrain (5 versions rated).