WHAT DOES SULEV MEAN REGARDING BMW'S 3 SERIES SEDANS?
super ultra low emissions vehicle.
Also means it has a special engine (M56) with more expensive parts. E.g. the PCV valve is built into the valve cover. So to replace it, I was quoted $1500. The fuel pump is integral to the gas tank. The tank must be replaced if the fuel pump goes out. Look it (M56) up on line. If considering buying one, especially an older one look for the non-SULEV engine.
The original question was about the 2012 3-series BMW, which doesn't have an M56 engine. The 2.5L M56 ended in 2005. Since then, the 3- series SULEV engine has been the N51 3.0L, which has just a few parts different from the standard N52 but the same torque and HP and doesn't have the fuel pump and PCV valve repair costs of the M56.
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