If you’ve thought about buying a BMW in the last five years, chances are you had your eye on the N54 engine in the 135i, 335i and 535i (plus X6 and Z4). These models sported the attractive 3.0 ...

For 2011, all 135i models will be fitted with the engine, in addition to a new dual-clutch transmission. Although the new turbocharged 3.0-liter I-6 receives variable valve timing, the largest ...

At 3420 pounds, this 135i tester has a very modern heft. The two available engines, a 230-hp, 3.0-liter inline-six and a 300-hp twin-turbo inline-six, are direct hand-me-downs from the current 3 ...

As with the 535i, BMW would eventually drop the N54 into the 1 Series engine bay, with 2008 seeing the debut of coupé and convertible versions of the 1 Series, both available in 128i and 135i guises.

These reductions amount to a weight saving of 137 pounds; our 135i weighed 3420 pounds versus 3557 for a 335i coupe. Fortunately, there is no reduction in engine size or output. The 135i gets the ...

The N54 was put in the 335i until BMW made what's believed to be a more cost-effective engine, the N55. The N54 was used in the 335i from 2006 until 2010, the 135i from 2008-2013, and the 740i ...

The BMW 135i is a great car. It's a blast to drive thanks to its fantastic handling and responsive turbocharged engine. Still, there are always ways to make a car better.

BMW announced that it will expand its 1-series lineup with the addition of the 2013 BMW 135is coupe and 135is convertible. The enthusiast-oriented 135is models will be powered by BMW's TwinPower 3 ...

BMW 135i and 335i models can now be retrofitted with two new performance power kits for more muscle and speed. The Version 1 kit has new engine software to optimize performance, while Version 2 ...

Stiffer bushings for the front lower control arms and rear subframe make the Dinan 135i feel less squirmy under braking. With $11,890 in suspension and engine work, Dinan's Stage 3 135i is far ...

For those that consider themselves rookies, here's how to do it: Step 2: Take the car for a spin or ensure that the engine oil is warm. Step 3: Park the car on an even surface and apply the ...