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Tomorrow’s world: Fiat's MultiAir engine tech

By Jesse Crosse Motor Industry 14 October 2009 16:50 Fiat this year launches what it claims is a big step forward in variable valve timing: MultiAir. It's the first time that a manufacturer has made a properly variable valve system a production reality, and will slowly be rolled out across most of Fiat's and Alfa's car ranges.How does Fiat's MultiAir vary from existing variable valve timing (VVT) systems?Current VVT systems rely on mechanical systems to open and close the valves. Engineers have long understood the benefits of changing valve opening and closing times to tweak an engine's power and emissions performance, depending on the need for power or parsimony.Valves are an engine's nose and mouth – it inhales through inlet valves and exhales through exhaust valves.

BMW M6 Gran Coupe: Offical

After an early leak of photos, the new BMW M6 Gran Coupe – complete with 4.4 litre bi-turbo V8 and 553bhp – arrives ahead of a Detroit Auto Show debut. Just as expected, the M6 Gran Coupe comes with BMW’s 4.4 litre twin-turbo V8, delivering 553bhp to the baqck wheels and driving the M6 to 62mph in 4.2 seconds. And, if our previous experience of the 6 Series Gran Coupe is anything to go by, providing sublime handling and dynamics in the process.

McLaren P1 caught on video

We have video of the new McLaren P1 – suitably camouflaged – out testing in Spain as McLaren fettles its Ferrari F70 basher. That was borne out when we had photos of the McLaren P1 shot in Norfolk a week or two ago as the P1 visited one of McLaren’s suppliers on an industrial estate in Diss. Now we get the P1 on the move on video.