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2012 Mercedes-Benz SLK AMG breaks cover

Mercedes-Benz is adding even more mojo to the SLK roadster for 2012, launching the most powerful version of its long-running sports car. Dressed in AMG trim, the SLK gets an even angrier look and a slew of performance enhancements. But that’s all overshadowed by one omnipotent figure: the 415 hp derived from the naturally aspirated V8.

Vauxhall planning City Car

The 2004 Opel TRIXX Concept With the world and his dog seemingly trying to squeeze in to smaller and smaller cars, it should come as no surprise that Vauxhall/Opel’s new boss in Europe – Nick Reilly – says that the number one priority for GM in Europe is a new City Car. After all, what was once considered as small as you need to go – the Corsa or the Agila – seems something of a heffalump compared to many of the city cars flooding in to our cities. So how far down the line are Vauxhall with their City Car plans?

MPG or performance: It's a trade with turbos

Some automakers say turbochargers offer high fuel economy and quick acceleration, the best of both worlds. Well, yes and no. Turbocharged vehicles allow automakers to keep power output high while they downsize engines for better fuel economy.