2018 BMW 4 Series
The Verdict
Worst problem area
Engine
Engine leads by volume: 22 of 43 complaints (51%) mention it. Complaints mentioning Airbags & Restraints include more reported injuries (4) than those mentioning any other identified area.
Complaints filed rose from 29 in 2017 to 43 in 2018.
Data last changed . Sources: NHTSA complaints and recalls, EPA fuel economy data. Methodology
Cost, Fuel Economy & Complaint History
| Category | 2016 | 2017 | 2018 | 2019 | 2020 | vs. 2018 Compact Cars |
|---|---|---|---|---|---|---|
| Annual fuel cost ($) | 2,850–3,500 | 2,850–3,350 | 2,850–3,350 | 2,850–3,700 | 2,850–3,700 | |
| Combined MPG | 22–27 | 23–27 | 23–27 | 21–27 | 21–27 | |
| City / Highway MPG | 19–23 / 28–35 | 19–23 / 29–34 | 19–24 / 29–34 | 18–24 / 28–34 | 18–23 / 27–34 | |
| CO₂ tailpipe (g/mi) | 330–399 | 324–395 | 324–390 | 324–413 | 327–412 | |
| Complaints filed | 55 | 29 | 43 | 25 | 5 | |
| Recalls issued | 1 | 2 | 1 | 3 | 1 | |
| Crash-involved complaints | 2 | 1 | 6 | 3 | 1 | |
| Fire-involved complaints | 0 | 0 | 2 | 0 | 0 | |
| Injuries reported | 3 | 1 | 9 | 1 | 3 | |
| Deaths reported | 0 | 0 | 0 | 0 | 0 | |
| Configurations compared | 11 | 11 | 11 | 11 | 11 |
Not compared: this database has no vehicle sales or registration figures, so a raw count mostly reflects how many were sold, not how safe the vehicle is.
Common questions
How many recalls does the 2018 BMW 4 Series have?
1 NHTSA recall campaign as of Sep 16, 2026. Check your VIN with NHTSA to see whether one applies to your car.
What is the most common complaint about the 2018 BMW 4 Series?
Engine: 22 of 43 NHTSA complaints (51%) mention it.
What gas mileage does the 2018 BMW 4 Series get?
EPA rates it 23–27 MPG combined.
How much does it cost to fuel a 2018 BMW 4 Series?
EPA estimates $2,850–$3,350 a year in fuel costs, using EPA's assumptions.
EPA-Rated Configurations (15)
| Configuration | Transmission | Cylinders | Displacement | Drivetrain | Fuel Type | Vehicle Class | City | Highway | Combined | Annual Fuel Cost | CO₂ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Configuration 1 | Automatic (S8) | 4 | 2.0L | Rear-Wheel Drive | Premium | Subcompact Cars | 24 mpg (high) | 34 mpg (high) | 27 mpg (high) | $2,850 (low) | 324 g/mi (low) |
| Configuration 2 | Automatic (S8) | 4 | 2.0L | All-Wheel Drive | Premium | Subcompact Cars | 22 mpg | 32 mpg | 26 mpg | $3,000 | 343 g/mi |
| Configuration 3 | Automatic (S8) | 6 | 3.0L | Rear-Wheel Drive | Premium | Subcompact Cars | 21 mpg | 29 mpg (low) | 24 mpg | $3,250 | 372 g/mi |
| Configuration 4 | Automatic (S8) | 6 | 3.0L | All-Wheel Drive | Premium | Subcompact Cars | 20 mpg | 29 mpg (low) | 23 mpg (low) | $3,350 (high) | 382 g/mi |
| Configuration 5 | Automatic (S8) | 4 | 2.0L | Rear-Wheel Drive | Premium | Compact Cars | 24 mpg (high) | 34 mpg (high) | 27 mpg (high) | $2,850 (low) | 324 g/mi (low) |
| Configuration 6 | Manual 6-spd | 4 | 2.0L | Rear-Wheel Drive | Premium | Compact Cars | 21 mpg | 33 mpg | 25 mpg | $3,100 | 351 g/mi |
| Configuration 7 | Automatic (S8) | 4 | 2.0L | All-Wheel Drive | Premium | Compact Cars | 23 mpg | 33 mpg | 27 mpg (high) | $2,850 (low) | 333 g/mi |
| Configuration 8 | Automatic (S8) | 4 | 2.0L | Rear-Wheel Drive | Premium | Compact Cars | 24 mpg (high) | 34 mpg (high) | 27 mpg (high) | $2,850 (low) | 324 g/mi (low) |
| Configuration 9 | Automatic (S8) | 4 | 2.0L | All-Wheel Drive | Premium | Compact Cars | 23 mpg | 33 mpg | 27 mpg (high) | $2,850 (low) | 333 g/mi |
| Configuration 10 | Automatic (S8) | 6 | 3.0L | Rear-Wheel Drive | Premium | Compact Cars | 21 mpg | 32 mpg | 25 mpg | $3,100 | 352 g/mi |
| Configuration 12 | Manual 6-spd | 6 | 3.0L | All-Wheel Drive | Premium | Compact Cars | 19 mpg (low) | 29 mpg (low) | 23 mpg (low) | $3,350 (high) | 390 g/mi (high) |
| Configuration 15 | Manual 6-spd | 6 | 3.0L | Rear-Wheel Drive | Premium | Compact Cars | 19 mpg (low) | 29 mpg (low) | 23 mpg (low) | $3,350 (high) | 389 g/mi |
Show 3 more configurations
| Configuration | Transmission | Cylinders | Displacement | Drivetrain | Fuel Type | Vehicle Class | City | Highway | Combined | Annual Fuel Cost | CO₂ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Configuration 11 | Automatic (S8) | 6 | 3.0L | All-Wheel Drive | Premium | Compact Cars | 21 mpg | 31 mpg | 25 mpg | $3,100 | 357 g/mi |
| Configuration 13 | Automatic (S8) | 6 | 3.0L | Rear-Wheel Drive | Premium | Compact Cars | 21 mpg | 32 mpg | 25 mpg | $3,100 | 352 g/mi |
| Configuration 14 | Automatic (S8) | 6 | 3.0L | All-Wheel Drive | Premium | Compact Cars | 21 mpg | 31 mpg | 25 mpg | $3,100 | 357 g/mi |
Complaints by Category
| Category | Complaints | Crash-Involved | Fire-Involved | Injuries | Deaths |
|---|---|---|---|---|---|
| Engine | 22 | 2 | 1 | 2 | 0 |
| Transmission & Drivetrain | 2 | 0 | 0 | 0 | 0 |
| Fuel System | 2 | 0 | 0 | 1 | 0 |
| Electrical | 9 | 1 | 0 | 0 | 0 |
| Brakes | 2 | 1 | 0 | 0 | 0 |
| Steering | 0 | 0 | 0 | 0 | 0 |
| Suspension, Wheels & Tires | 1 | 0 | 0 | 0 | 0 |
| Airbags & Restraints | 7 | 3 | 0 | 4 | 0 |
| Driver Assistance & Speed Control | 3 | 1 | 0 | 1 | 0 |
| Body, Seats & Latches | 6 | 2 | 0 | 2 | 0 |
| Visibility & Lighting | 1 | 0 | 0 | 0 | 0 |
| Other | 6 | 0 | 1 | 2 | 0 |
A complaint that names more than one category is counted in each, so the rows can add up to more than the total number of complaints.
Recalls (1)
SEAT BELTS:FRONT · Campaign 17V507000 · Aug 17, 2017
Defect: 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.
Consequence: 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.