BMW M140i F20/F21 B58
The BMW M140i belongs to the F20/F21 1 Series generation, built approximately 2016–2019. It uses the B58, a 3.0L turbocharged inline-six petrol engine. Covered body styles are 5-door Hatchback and 3-door Hatchback. Depending on the variant, it was offered with rear-wheel drive or xDrive all-wheel drive, paired with a manual gearbox or the eight-speed Steptronic automatic. Engine management is expected to come from the BMW DME 8.6 family; confirm the exact ECU hardware and software from the vehicle.
About the BMW M140i F20/F21
The BMW M140i is the six-cylinder performance model of the F20/F21 1 Series, built as the five-door F20 and the three-door F21. Both body styles use the B58B30M0, the first-generation version of BMW’s 3.0-litre B58 inline-six. Depending on the market, the rear-wheel-drive M140i was joined by an M140i xDrive.
The M140i was offered with a six-speed manual or an eight-speed automatic, and that choice shapes how a calibration handles torque delivery. On automatic cars the transmission software is considered alongside the engine. The B58B30M0 is managed by a BMW DME 8.6 family control unit, but exact ECU hardware and software should be confirmed from the vehicle before a calibration file is prepared.
When you request a file, tell us whether your car is an F20 or F21, which gearbox it has and whether it is rear-wheel drive or xDrive. Include the production date, a read of the current DME software, the fuel grade you normally use and any intake, exhaust or cooling upgrades, along with details of earlier tuning.
Model & Generation Context
Engine family
B58
Exact revision is production-date and vehicle-specific
Displacement
3.0L
Production
c. 2016–2019
Approximate; confirm the build date from the vehicle
Fuel Type
Petrol
Supported Model Variants
BMW M140i
Engine: B58
Production: c. 2016–2019
Chassis: F20, F21 · 5-door Hatchback, 3-door Hatchback
Drivetrain: RWD, xDrive
Engine Platform
ECU & Transmission Context
BMW DME 8.6 ECU
Read the ECU hardware and software numbers from the vehicle before ordering a file.
Manual gearbox
Gearbox specification is vehicle-specific; confirm it from the vehicle order data.
Eight-speed Steptronic
Gearbox specification is vehicle-specific; confirm it from the vehicle order data.
Identification & Pre-Tuning Checks
- Confirm the engine code on the vehicle matches the B58 before ordering a file.
- The exact engine revision is production-date and vehicle-specific; it is not inferred from the model name.
- BMW DME generation and exact ECU hardware/software variant depend on the vehicle and production version.
- Scan for stored fault codes and resolve existing issues before any calibration work.
- Gearbox type varies on this model; note whether the car is manual or automatic when submitting a file.
Available Service Paths
Stage 1 Calibration File
A vehicle-specific calibration for a healthy engine on standard hardware. Includes ECU file review, fuel and hardware assessment.
Request a Stage 1 FileStage 2 Calibration Review
Review your supporting hardware, thermal setup and fuel configuration before requesting an upgraded calibration file.
Review My Stage 2 SetupCustom Calibration and Datalog Review
Submit datalogs and vehicle configuration for a fully custom calibration review tailored to your specific setup.
Request a Custom CalibrationECU Read and Support Check
Verify your ECU hardware and software version is supported before starting a calibration project.
Check ECU SupportTCU Calibration Assessment
Assess transmission control unit compatibility and calibration options for your vehicle and gearbox configuration.
Request a TCU FilePops and Bangs Request Review
Submit a request for review. Availability depends on vehicle setup, hardware configuration and local road-use requirements.
Availability depends on vehicle setup, hardware and local road-use requirements. Not available for all configurations.
Submit for ReviewRelated Resources
BMW B58 File Service
Order a file for your BMW M140i
Prepare the original ECU file, vehicle details, fuel and hardware setup before opening a file request.
Open File Service PortalOriginal ECU File
Read via OBD, Bench or Boot
Vehicle Details
Model, year and specification
Fuel Information
Fuel type and octane rating
ECU Identification
Hardware and software version