2018 BMW 4 Series: recalls, fuel economy and safety ratings
EPA rates the 2018 BMW 4 Series at 23–27 mpg combined across 15 versions. NHTSA lists 1 safety recall and 43 owner complaints for this model year.
Safety recalls
1
EPA combined mpg
23–27
NHTSA overall rating
—
Recall file dated Oct 27, 2026 · EPA file dated Sep 29, 2026 · updated Oct 27, 2026, 7:34 AM EDT
NHTSA lists this vehicle as 430I, 440I.
Check your own car: enter your 17-character VIN at nhtsa.gov/recalls to see open recalls for that exact vehicle, and contact a BMW dealer to schedule the repair — safety recall repairs are free. The list below covers the whole model year, so not every recall applies to every car.
2018 BMW 4 Series recalls
NHTSA's recall file lists 1 safety recall for the 2018 BMW 4 Series, newest first.
Seat belts: Front
NHTSA 17V507000Reported Aug 16, 2017
Filed by
BMW of North America, LLC
Units affected
67 (estimate)
Problem
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.
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 the risk of injury.
Remedy
BMW will notify owners, and dealers will inspect and, if necessary replace, the front seat belt assemblies, free of charge. The recall began October 13, 2017. Owners may contact BMW customer service at 1-800-525-7417.
Recall summaries are written by NHTSA from manufacturers' defect reports. Dates are when NHTSA received the report.
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2018 BMW 4 Series fuel economy by version
EPA city/highway/combined estimates for each engine, transmission and drive combination. Annual fuel cost is EPA's estimate for 15,000 miles a year (55% city, 45% highway) at EPA's current fuel-price assumptions; your cost will vary.
Source: FuelEconomy.gov (U.S. DOE and EPA), file dated Sep 29, 2026. Each version links to its FuelEconomy.gov record.
EPA estimates come from standardized lab tests so cars can be compared fairly; real-world mileage depends on speed, weather, load, tires and driving style.
2018 BMW 4 Series crash-test ratings
NHTSA 5-Star Safety Ratings for the tested versions. More stars mean a lower chance of serious injury in that type of crash. Rollover risk is NHTSA's estimated chance of rolling over in a single-vehicle crash.
2018 BMW 4 Series NHTSA 5-Star Safety Ratings
Tested vehicle
Overall
Frontal
Side
Rollover
Rollover risk
Forward collision warning
2018 BMW 4 Series 2 DR AWD
Not rated
Not rated
Not rated
Not rated
—
Optional
2018 BMW 4 Series 2 DR RWD
Not rated
Not rated
Not rated
Not rated
—
Optional
2018 BMW 4 Series 4 DR AWD
Not rated
Not rated
Not rated
Not rated
—
Optional
2018 BMW 4 Series 4 DR RWD
Not rated
Not rated
Not rated
Not rated
—
Optional
2018 BMW 4 Series C AWD
Not rated
Not rated
Not rated
Not rated
—
Optional
2018 BMW 4 Series C RWD
Not rated
Not rated
Not rated
Not rated
—
Optional
Source: NHTSA 5-Star Safety Ratings (New Car Assessment Program), checked Oct 26, 2026.
Star ratings compare vehicles of similar size and weight; a frontal rating for a large pickup is not directly comparable with one for a small car.
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2018 BMW 4 Series owner complaints
Owners have filed 43 complaints with NHTSA about the 2018 BMW 4 Series, most recently on Aug 5, 2026. 6 mention a crash, 2 a fire, 9 injured people and 0 deaths. These are unverified reports; a complaint is not proof of a defect.
Most-cited components in 2018 BMW 4 Series complaints
Component named in complaints
Mentions
Engine
14
Electrical system
9
Engine and engine cooling
7
Unknown or other
6
Seat belts
5
Air bags
4
Seats
3
Structure: Body
3
Fuel/propulsion system
2
Power train
2
Source: NHTSA consumer complaint files (complaints received since January 1, 2015). One complaint can name several components.
