DTM race drivers test the 2014 BMW M3 and BMW M4 at the Nurburgring: official video

The 424bhp BMW M4 coupe and 2014 BMW M3 saloon are shaping up to be two of the most hotly anticipated sports cars of the year. DTM drivers Timo Glock and Bruno Spengler deliver their verdicts at the Nürburgring.

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BMW's M division has lifted the veil of secrecy on the new in-line six-cylinder engine bound for its upcoming M3 saloon and M4 coupé and convertible. The brand has revealed a potent twin-turbocharged 3.0-litre direct-injection petrol unit that produces an official 424bhp at 7500rpm and what officials describe as "significantly more than 369lb ft" of torque. And here, BMW's DTM stars Timo Glock and Bruno Spengler deliver their verdicts after hot laps of the Nürburgring.

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