BMW once again has two engines in Ward ‘s Top Ten. This time it ‘s the venerable N55 and the newly released four cylinder N20. Here ‘s a quote from Ward ‘s
>BMW returns to the list for a second time with the N55 3.0L turbocharged 6-cyl. engine in the 335i coupe, an engine that perfectly illustrates the superior balance and refinement of inline engines and the Bavarian auto maker’s mastery of the architecture’s execution.
>With 300 hp and 300 lb.-ft. (407 Nm) of torque, this engine manages better than 25 mpg (9.4 L/100 km) during heavy-footed evaluation by WardsAuto editors in October.
>New to the winner’s circle is BMW’s 2.0L N20 turbocharged 4-cyl. engine that dazzles editors in both the Z4 sDrive 28i roadster and larger 528i sedan. With 258 lb.-ft. (350 Nm) of torque in the Z4 and 260 lb.-ft. (353 Nm) in the 5-Series, this stout, compact powertrain packs an impressive 120 hp/L, without sacrificing any of BMW’s stellar vehicle dynamics.
Source: Ward ‘s Auto