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Mazda brings diesel back to Indy with 6 Skyactiv-D

Diesel has enjoyed great success lately as a racing fuel, but there's one place it hasn't appeared for more than six decades: Indianapolis Motor Speedway. Mazda's breaking that dry spell this weekend, when its Mazda 6 Skyactiv-D race car will head to Indy for the Grand-Am race. We like the 6 in both road trim and racing livery, but that previous diesel-powered racer -- the Cummins Diesel Special -- is pretty neat too.

Britain’s most reliable cars revealed in 2014 Driver Power survey

UK car drivers are happier with their cars than ever before, according to a survey of over 50,000 motorists. The Driver Power survey by Auto Express found that the average satisfaction rating of a car in the top 100 was 88.36% - a rise of 7% compared to when the survey was launched in 2002. When completing the survey, owners are asked to rate their cars for factors from reliability to running costs and from comfort to ease of driving.

Porsche Panamera Sport Turismo concept (2012)

This is the new Porsche Panamera Sport Turismo concept car, unveiled on the eve of the 2012 Paris motor show. We hear that we won’t see a Sport Turismo version of the current Panamera, but this concept instead previews the facelift treatment that will be applied to Porsche’s four-door saloon as part of a mid-life refresh in 2013. And beyond that the Sport Turismo showcases a second bodystyle than will join the range when the Mk2 Panamera appears in late 2015.