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New Mercedes SL 400 replaces SL 350

The new Mercedes SL 400 (pictured) replaces the old SL 350 It’s a little over two years since the latest Mercedes SL arrived, and Mercedes has now decided to add a little zest to sales by dropping the old SL 350 and replacing it with a new Mercedes SL 400. The new SL 400 gets its power from the new E400 which means a twin-turbo 3.0 litre V6 with 328bhp and 354 lb/ft of torque – 26bhp and 81 lb/ft more than the old SL 350 – enough to let the SL 400 scoot to 62 mph in 5.2 seconds – 0.7s better than the 350 -= and on to a limited top speed of 155 mph. The new SL 400 has to make do with Mercedes tried and tested 7-speed auto – despite a new 9-speed now being available in Mercedes’ arsenal – which gives the SL 400 official economy of 38.6 mpg and emissions of 172g/km – not that you’ll come close in the real world.

Book Review: Car Guys vs Bean Counters

Designers are the surprise heroes of a new book by former General Motors vice chairman Robert Lutz, called Car Guys vs. Bean Counters: The Battle for the Soul of American Business. "The real car guys are in design," Lutz told me during his recent book tour.

Jaguar offers all-wheel drive - but not for UK

Jaguar has confirmed four-wheel-drive models will join its range once again, for the first time since the AWD X-type was killed off back in 2009. The first 4wd Jaguars will be the XJ and XF ranges. They'll be petrol-powered only, and just in saloon form for now, but don't get too excited if you're a UK customer: Jaguar has no plans to bring the all-paw big cats over here any time soon.