Gm Fuel Cap on 2040-parts.com

Preview: Porsche Panamera

After what has already been the most drawn-out model introduction ever (the initial Porsche sketches of the new model having been revealed in 2005), Porsche has finally released the first official rendering of its forthcoming Panamera sedan, set to be launched in 2009. Though the plan view doesn't show much of the new Porsche's design, the company says the features will 'include a wide and low body offering dynamic proportions and muscular design'. But while the grand tourer will have a 'compact overall look', the interior space is claimed to offer a brand-new experience of roominess, with two single seats and generous headroom at the rear allowing adults to sit in comfort.

Lexus IS 300h promises unrivalled ownership costs

The new Lexus IS - launched at Detroit in January and costing from £26,495 for the IS 250 in the UK – actually offers ownership costs that eclipse diesel offerings from the likes of Jaguar, BMW, Audi and Mercedes, say Lexus. Despite the logical assumption that the complex hybrid powerplant in the IS 300h would cost more to maintain, Lexus say the opposite is true. Because it has no clutch and the starter motor and alternator are integrated they require no servicing or replacement and Lexus has fitted a timing chain instead of a timing belt, so it won’t need regular replacement either.

Autoweek in review: Win a Chrysler 300 SRT, the new Viper under $100K, and we play with an Aston Martin

Want a chance to win a Chrysler 300 SRT? Of course you do. The Autoweek America Adventure is a road trip you'll never forget—and it may even be your path to 300 SRT ownership.