The Lemon Index
BMW X4 reliability: problems, specs and engines by year.
Owners filed 93 complaints about the 2015–2025 BMW X4 with the government, most about engine.
Complaints by model year
| Model year | Complaints | Engines | Top areas |
|---|---|---|---|
| 2015 | 18 | N20, N55 | engine, electrical |
| 2016 | 10 | N20, N55 | engine, electrical |
| 2017 | 3 | N20, N55 | electrical, brakes |
| 2018 | 11 | N20, N55 | engine, electrical |
| 2019 | 11 | B48, B58 | electrical, engine |
| 2020 | 15 | B48, B58, S58 | electrical, other |
| 2021 | 6 | B48, B58, S58 | seat belts, engine |
| 2022 | 4 | B48, B58, S58 | brakes, body & structure |
| 2023 | 8 | B48, B58, S58 | collision warning, brakes |
| 2024 | 3 | B48, B58, S58 | visibility, transmission & drivetrain |
| 2025 | 4 | B48, B58 | engine, electrical |
We don't have US sales for this model yet, so there's no Lemon Index: popular years draw more complaints partly because more were sold.
Scores are per model year, so a year with several engines shows the same score next to each one. An empty complaints bar means too few complaints to score that year; a gray dot means not enough YouTube videos. Sources: Wikipedia: BMW B48 · Wikipedia: BMW B58 · Wikipedia: BMW N20 · Wikipedia: BMW N55 · Wikipedia: BMW S58 · EPA fueleconomy.gov.
What owners complain about
| System | Share of complaints |
|---|---|
| Engine | 20% |
| Electrical | 20% |
| Other | 11% |
| Brakes | 9% |
| Transmission & drivetrain | 9% |
| Air bags | 5% |
When problems show up
Half of the owners who gave a mileage reported the problem between 7,600 and 70,000 miles (middle: 38,000, from 30 complaints).
How serious
| Crashes | Fires | Injury reports | Death reports |
|---|---|---|---|
| 9 | 4 | 2 | 0 |
As reported by owners to NHTSA. Not verified.
Recalls we found 28
26V056000 31/01/2026 · 2021, 2022, 2023
ELECTRICAL SYSTEM:STARTER ASSEMBLY
25V636000 23/09/2025 · 2020, 2021, 2022
ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
24V910000 05/12/2024 · 2025
AIR BAGS
24V608000 14/08/2024 · 2015, 2016, 2017, 2018
ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP
23V821000 06/12/2023 · 2023
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
23V797000 24/11/2023 · 2015
AIR BAGS:FRONTAL
23V770000 16/11/2023 · 2024
STEERING
23V211000 29/03/2023 · 2021
SEATS
22V070000 09/02/2022 · 2022
POWER TRAIN:AUTOMATIC TRANSMISSION
21V831000 22/10/2021 · 2022
EXTERIOR LIGHTING
21V646000 18/08/2021 · 2022
EQUIPMENT:OTHER:LABELS
21V598000 02/08/2021 · 2020, 2021
ENGINE
21V521000 08/07/2021 · 2019
AIR BAGS:FRONTAL
21V199000 24/03/2021 · 2021
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
21V096000 19/02/2021 · 2019, 2020, 2021
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
20V598000 30/09/2020 · 2020, 2021
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
20V355000 15/06/2020 · 2020
STEERING:LINKAGES:TIE ROD ASSEMBLY
20V164000 19/03/2020 · 2020
SEAT BELTS:FRONT:BUCKLE ASSEMBLY
20V152000 18/03/2020 · 2019, 2020
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
19V738000 16/10/2019 · 2020
STEERING:RACK AND PINION:PINION SHAFT
19V684000 28/09/2019 · 2019, 2020
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
19V678000 25/09/2019 · 2020
SUSPENSION:FRONT
19V563000 31/07/2019 · 2019
SEATS
19V291000 10/04/2019 · 2019
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
18V453000 06/07/2018 · 2019
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
From NHTSA's recall lookup by model name and year; check a car's VIN for its own open recalls.
BMW X4 specs and engines, every year. Every version the EPA lists, with its engine and owner complaints.
2025 · 4 versions
| Version | Engine | Size | Power | Transmission | Drive | EPA | Owner complaints |
|---|---|---|---|---|---|---|---|
| X4 xDrive30i | B48 | 2.0 L I4 turbo | 248 hp · 258 lb-ft | 8-speed auto | AWD | 24 mpg | 4 complaints (all engines combined) |
| X4 M40i | B58 | 3.0 L I6 turbo + mild hybrid | 382 hp · 369 lb-ft | 8-speed auto | AWD | 23 mpg | 4 complaints (all engines combined) |
| X4 M | not confirmed | 3.0 L I6 turbo | — | 8-speed auto | AWD | 17 mpg | 4 complaints (all engines combined) |
| X4 M Competition | not confirmed | 3.0 L I6 turbo | — | 8-speed auto | AWD | 17 mpg | 4 complaints (all engines combined) |
2024 · 4 versions
| Version | Engine | Size | Power | Transmission | Drive | EPA | Owner complaints |
|---|---|---|---|---|---|---|---|
| X4 xDrive30i | B48 | 2.0 L I4 turbo | 248 hp · 258 lb-ft | 8-speed auto | AWD | 24 mpg | 3 complaints (all engines combined) |
| X4 M40i | B58 | 3.0 L I6 turbo + mild hybrid | 382 hp · 369 lb-ft | 8-speed auto | AWD | 23 mpg | 3 complaints (all engines combined) |
| X4 M | S58 | 3.0 L I6 turbo | 473 hp · 457 lb-ft | 8-speed auto | AWD | 17 mpg | 3 complaints (all engines combined) |
| X4 M Competition | S58 | 3.0 L I6 turbo | 503 hp · 479 lb-ft | 8-speed auto | AWD | 17 mpg | 3 complaints (all engines combined) |
2023 · 4 versions
| Version | Engine | Size | Power | Transmission | Drive | EPA | Owner complaints |
|---|---|---|---|---|---|---|---|
| X4 xDrive30i | B48 | 2.0 L I4 turbo | 248 hp · 258 lb-ft | 8-speed auto | AWD | 24 mpg | 8 complaints (all engines combined) |
| X4 M40i | B58 | 3.0 L I6 turbo + mild hybrid | 382 hp · 369 lb-ft | 8-speed auto | AWD | 23 mpg | 8 complaints (all engines combined) |
| X4 M | S58 | 3.0 L I6 turbo | 473 hp · 457 lb-ft | 8-speed auto | AWD | 17 mpg | 8 complaints (all engines combined) |
| X4 M Competition | S58 | 3.0 L I6 turbo | 503 hp · 479 lb-ft | 8-speed auto | AWD | 17 mpg | 8 complaints (all engines combined) |
2022 · 4 versions
| Version | Engine | Size | Power | Transmission | Drive | EPA | Owner complaints |
|---|---|---|---|---|---|---|---|
| X4 xDrive30i | B48 | 2.0 L I4 turbo | 248 hp · 258 lb-ft | 8-speed auto | AWD | 24 mpg | 4 complaints (all engines combined) |
| X4 M40i | B58 | 3.0 L I6 turbo + mild hybrid | 382 hp · 369 lb-ft | 8-speed auto | AWD | 23 mpg | 4 complaints (all engines combined) |
| X4 M | S58 | 3.0 L I6 turbo | 473 hp · 457 lb-ft | 8-speed auto | AWD | 17 mpg | 4 complaints (all engines combined) |
| X4 M Competition | S58 | 3.0 L I6 turbo | 503 hp · 479 lb-ft | 8-speed auto | AWD | 17 mpg | 4 complaints (all engines combined) |
2021 · 4 versions
| Version | Engine | Size | Power | Transmission | Drive | EPA | Owner complaints |
|---|---|---|---|---|---|---|---|
| X4 xDrive30i | B48 | 2.0 L I4 turbo | 248 hp · 258 lb-ft | 8-speed auto | AWD | 25 mpg | 6 complaints (all engines combined) |
| X4 M40i | B58 | 3.0 L I6 turbo | 382 hp · 369 lb-ft | 8-speed auto | AWD | 23 mpg | 6 complaints (all engines combined) |
| X4 M | S58 | 3.0 L I6 turbo | 473 hp · 442 lb-ft | 8-speed auto | AWD | 16 mpg | 6 complaints (all engines combined) |
| X4 M Competition | S58 | 3.0 L I6 turbo | 503 hp · 442 lb-ft | 8-speed auto | AWD | 16 mpg | 6 complaints (all engines combined) |
2020 · 4 versions
| Version | Engine | Size | Power | Transmission | Drive | EPA | Owner complaints |
|---|---|---|---|---|---|---|---|
| X4 xDrive30i | B48 | 2.0 L I4 turbo | 248 hp · 258 lb-ft | 8-speed auto | AWD | 25 mpg | 15 complaints (all engines combined) |
| X4 M40i | B58 | 3.0 L I6 turbo | 382 hp · 369 lb-ft | 8-speed auto | AWD | 23 mpg | 15 complaints (all engines combined) |
| X4 M | S58 | 3.0 L I6 turbo | 473 hp · 442 lb-ft | 8-speed auto | AWD | 16 mpg | 15 complaints (all engines combined) |
| X4 M Competition | S58 | 3.0 L I6 turbo | 503 hp · 442 lb-ft | 8-speed auto | AWD | 16 mpg | 15 complaints (all engines combined) |
2019 · 2 versions
2018 · 2 versions
2017 · 2 versions
2016 · 3 versions
| Version | Engine | Size | Power | Transmission | Drive | EPA | Owner complaints |
|---|---|---|---|---|---|---|---|
| X4 xDrive28i | N20 | 2.0 L I4 turbo | 241 hp · 258 lb-ft | 8-speed auto | AWD | 23 mpg | 10 complaints (all engines combined) |
| X4 M40i | N55 | 3.0 L I6 turbo | 355 hp · 343 lb-ft | 8-speed auto | AWD | 21 mpg | 10 complaints (all engines combined) |
| X4 xDrive35i | N55 | 3.0 L I6 turbo | 302 hp · 295 lb-ft | 8-speed auto | AWD | 21 mpg | 10 complaints (all engines combined) |
2015 · 2 versions
Engine sizes, transmissions, drive and MPG: EPA (fueleconomy.gov). Engine codes and power: BMW's ratings as listed in Wikipedia's BMW engine articles (US-rated figures can differ by a few hp); "not confirmed" means we couldn't source the code for that version. Owner complaints: NHTSA, about the whole car (any system), not only the engine. Index = the model year's Lemon Index (complaints per car sold vs the average car); it is shown for a version only when that was the only engine that year. A complaint count is not a failure rate: popular versions draw more complaints because more were sold.
Quick answers
What are the most common BMW X4 problems?
In owner complaints to the government, the top areas are engine, electrical, other.
What engines does the BMW X4 have?
By model year: 2020: B48, B58, S58; 2021: B48, B58, S58; 2022: B48, B58, S58; 2023: B48, B58, S58; 2024: B48, B58, S58; 2025: B48, B58. Full list in the specs table.
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Updated · Free to use with credit: Source: The Lemon Index (lemonindex.com)
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