Technical data
BMW Effi cientDynamics
Less emissions. More driving pleasure.
Beneath the long hoods of the Z Roadsters lie two of the world’s
most sophisticated inline six-cylinder engines. The powerplant in the
Z sDrivei is a revolutionary twin-turbo that generates horse-
power and lb-ft of torque. It accelerates with a force that throws
you back in your seat and doesn’t stop until redline, reaching mph in
. seconds.
Turbo lag is a thing of the past, thanks to Double-VANOS
“steplessly” variable valve timing, direct fuel injection, and BMW’s
inspired use of two turbochargers, each supplying three cylinders with
compressed air. High-precision direct fuel injection maximizes every
ounce of fuel, making the twin-turbo engine more effi cient. A lightweight
aluminum engine block and Double-VANOS technology enhance
smooth power delivery, fuel effi ciency and lowered emissions.
The surge of horses and lb-ft of torque rushes the BMW
Z sDrivei from - in . seconds.
Valvetronic technology lets
the powerplant “breathe” deeply, resulting in greater power, higher
torque, quicker engine response, a smoother idle and enhanced
effi ciency. The lightweight composite magnesium/aluminum engine
block adds to the Roadster’s spirited acceleration and nimble handling.
Standard on both is a smooth-shifting -speed manual transmission
specially designed for the Z Roadster, with a shorter throw that
enhances the engine’s immediate response. The Z sDrivei is also
available with a high-performance -speed Double Clutch Transmission.
Based on the M’s M DCT transmission, it delivers faster acceleration
and smooth performance, with a choice of three modes: automatic,
manual, or steering wheel-mounted paddle shifters. The Z sDrivei
also offers a -speed Sport Automatic transmission with Automatic
Transmission Control, as well as Sport and STEPTRONIC modes and
steering wheel-mounted paddle shifters for sportier driving.
Engines | 2726
The best reason to drive with the roof down:
the BMW inline six-cylinder engine.
The Z Roadster sDrivei twin-turbo engine produces horsepower
at rpm, and quickly develops lb-ft of torque at rpm, which
continues without fading through to the rpm range. With such a broad
range of powerful torque, you can enjoy smooth, robust acceleration in any
gear, at any speed.
BMW AG test results with -speed Double Clutch Transmission; . seconds with manual
transmission. BMW urges you to obey local speed laws and always wear safety belts.
BMW AG test results with manual transmission; . seconds with Sport Automatic.
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Torque (lb-ft)
Power output (horsepower )
Engine speed (rpm)
Torque (lb-ft)
Power output (horsepower)