How Do I Know if I Have an N20 or N26 Turbocharged BMW 4 Cylinder Engine?
The late model BMW turbocharged 2.0 liter engines (TwinPower Turbo) used in the US market BMW 1, 2, 3, 4, 5, X and Z series models are produced in two variants for US distribution, known as the N20 and N26. The N20 is the standard Ultra Low Emissions Vehicle (ULEV) version and the N26 is the Super Ultra Low Emissions Vehicle (SULEV) version intended for states that employ the most stringent vehicle emissions standards.
States that receive vehicles with the N26 engine include; Arizona, California, Connecticut, District of Columbia, Maine, Maryland, Massachusetts, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, Vermont and Washington. While it is likely that most BMW N20/N26 models sold in these states will be equipped with the N26, don’t be surprised to find N20 models registered in these states … or …. N26 models in the other states.
Why should you know whether your BMW has an N20 or an N26 engine? When ordering engine, emissions, fuel system and some other parts, you will need to clarify if you have the N20 or the N26. Failure to do so may very well result in the wrong parts being ordered.
So, how do you know which engine you have?
1) You can share the VIN with the BAVauto advisors, who can then use the VIN to verify the engine in your BMW.
2) Under the engine hood, the emissions control information sticker will note if the vehicle is a ULEV (N20) or SULEV (N26). The sticker is often on the underside of the hood itself.