BMW 3-Series Convertible customers have a choice of two inline-6 engines that are the worlds’ finest. The BMW 328i features 230 horsepower while the 335i has 300 horsepower and is the first inline-6 equipped with a single twin-scroll turbocharger, BMW’s Valvetronic throttle-less intake technology, High Precision direct fuel injection, and all-aluminum construction.
The BMW 335i’s new inline-6 engine displaces 3.0-liters and develops maximum output of 300 hp at 5,800 rpm, with peak torque of 300 lb-ft available all the way from 1,200-5,000 rpm. Redline is 7,000 rpm. This is the same level of performance as the previous 3.0-liter twin-turbo inline-6 but with the innovation of twin-scroll technology and the integration of Valvetronic, this new engine is even more fuel efficient.
The peak power is 300 hp at 5800rpm, this is fully 70 hp up on the 2011 328i models. At least as important is the fact that this engine can deliver its peak torque from 1200 rpm – not far above idling – to 5000 rpm. On the road, this power and torque result in outstanding performance. The 335i Convertible and BMW 3-Series Coupe can accelerate from 0 – 60 mph in just 5.3 (5.5) seconds and 5.5 (5.7) seconds, respectively, when equipped with the manual (automatic) transmission. The sense of urgency continues all the way to the electronically limited top speed of 130 mph (150 mph when equipped with the optional Sport Package).
The BMW 328i Convertible is powered by BMW’s 230 horsepower, 200 lb-ft, 3.0-liter inline-6 engine, known internally as the N52. Its magnesium/aluminum construction and Valvetronic variable valve lift are features found only on BMW engines. The N52 achieves impressive progress on all performance and technology fronts, especially in its remarkably light weight of 357 lbs. An aluminum/magnesium engine block, hollow camshafts, plastic camshaft cover, improved combustion chambers, a further evolved Double VANOS, higher fuel injection pressure, sophisticated engine electronics, an electric coolant pump, a variable-volume oil pump and an oil/coolant heat exchanger are the other weight-saving features and improvements of this engine over previous generations.
The 2011 BMW 3-Series Convertible and BMW 3-Series Coupe models will go on sale in Spring 2010, and pricing will be announced closer to the on-sale date.
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