2014 BMW 535d xDrive Beats 2014 Audi A6 TDI in Latest Comparison Test
 

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Last week I told you about how BMW is beating Audi in the laser-headlight race. This week, BMW is beating Audi once again — this time in an AutoGuide comparison test pitting the Audi A6 TDI against the BMW 535d xDrive. With six-cylinder diesel power and all-wheel drive, both cars are similar in execution, but the [...]

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