2011 BMW Z4 at the New York Motor Show with new 2-litre TwinPower Turbo engine for the first time.
BMW Z4 at the New York Motor Show (April 20/21) with new 2-litre TwinPower Turbo engine for the first time.
- 19.04.2011
Munich. With its athletic design, agile handling and powerful engine, the BMW Z4 has achieved outstanding success in the class of premium roadsters, having been the worldwide segment leader in 2009 and 2010. Towards the end of the year, the BMW Z4 is to feature another technological highlight: a completely newly developed 2-litre engine with TwinPower Turbo technology and an output of 176 kW/240 bhp. Its name is BMW Z4sDrive28i.
Thanks to TwinPower Turbo technology, the new supercharged 4-cylinder petrol engine with all-aluminium crankcase, already available in the BMW X1 xDrive28i, provides increased torque, improved performance and much reduced fuel consumption and emission levels as compared to the existing 6-cylinder induction engine model BMW Z4 sDrive30. The absolute figures, including those for the driving performance of the new BMW Roadster, are expected to be finalised mid-year.
This newly developed engine in the BMW Z4 sDrive 28i uses the globally unique BMW TwinPower Turbo technology. In other words it is fitted with High Precision Injection as well as a turbocharger powered via two exhaust ducts. Other elements of this progressive engine package include the variable camshaft control system double VANOS and the fully variable valve control system VALVETRONIC.
The new 2-litre petrol engine with BMW TwinPower Turbo technology in the BMW Z4 sDrive28i thus sets a further milestone in the BMW EfficientDynamics strategy.
The sum of all parts.
High Precision Injection and Twin Turbo 
in the BMW Z4 Roadster.
Two milligrams of petrol – that’s how precise the High Precision Injection (HPI) controls the fuel-air mix. The dosage of the fuel injected is precisely ensured by the piezo injectors with only part of the combustion chamber being filled under lower partial loads. Thanks to the Twin Turbo, it is now possible for the straight six-cylinder engine to provide a supreme standard of power and performance previously only conceivable with far larger engines. Engine weight is also much lower, inter alia on account of the all-aluminium crankcase, which naturally benefits the agility of the entire car and offers more power on less fuel.
A classic – redesigned.
The exterior of the BMW Z4 Roadster.
A roadster designed the way only BMW can: the classic proportions of the stretched bonnet and short overhangs are complimented by the low seats near to the rear axle to grant the driver a perfect feel for the road. The modern shape, an interplay of striking contours and soft mergers, fully captures the character of this vehicle from its characteristic kidney grille to the powerful wheelarches at the rear. However, it’s the way this roadster effortlessly negotiates straights and bends that makes it truly like no other.
Reduced fuel consumption, increased driving pleasure.
BMW EfficientDynamics in the BMW Z4 Roadster.
Behind BMW EfficientDynamics lies a package of intelligent features which considerably reduce emissions and improve fuel consumption while, at the same time, boosting performance. They ensure that the BMW Z4 Roadster sets new standards in terms of the efficiency and economy of its engine thanks to Brake Energy Regeneration, Electric Power Steering and a host of intelligent, technological modifications. Together, they solve the “power vs. fuel consumption” dilemma in a way that’s never been seen before.