BMW 4 Series F32/F33/F36 N20 Models
This page covers the BMW 428i from the F32/F33/F36 4 Series generation, built approximately 2013–2016. It also lists the N20 production period of the 420i, which changed engine family during production. Every variant on this page uses the N20, a 2.0L turbocharged inline-four petrol engine. Covered body styles are Coupé, Convertible and Gran Coupé. Depending on the variant, it was offered with rear-wheel drive or xDrive all-wheel drive, paired with a manual gearbox or an automatic gearbox. Engine management is by a BMW DME; identify the exact ECU hardware and software from the vehicle before ordering a file.
Model & Generation Context
Engine family
N20
Exact revision is production-date and vehicle-specific
Displacement
2.0L
Production
c. 2013–2016
Approximate; confirm the build date from the vehicle
Fuel Type
Petrol
Supported Model Variants
BMW 428i
Engine: N20
Production: c. 2013–2016
Chassis: F32, F33, F36 · Coupé, Convertible, Gran Coupé
Drivetrain: RWD, xDrive
Engine: N20
Production: c. 2013–2016
Chassis: F32, F33, F36 · Coupé, Convertible, Gran Coupé
Drivetrain: RWD, xDrive
Engine Transition Pages
Engine Platform
ECU & Transmission Context
BMW DME — identify from vehicle
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.
Automatic gearbox
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 N20 before ordering a file.
- The exact engine revision is production-date and vehicle-specific; it is not inferred from the model name.
- Identify the BMW DME and its exact hardware and software version from the vehicle; it is not inferred from the model name.
- Scan for stored fault codes and resolve existing issues before any calibration work.
- The 420i changed engine family during production; only the N20-powered period is covered here.
- 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 N20 File Service
Order a file for your BMW 4 Series
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