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2015 Subaru WRX debuts at Los Angeles Auto Show

If you loved the rakish WRX concept that bowed in New York earlier this year, the production 2015 WRX, which debuted today at the Los Angeles Auto Show, may be a slight downer: decidedly less boy-racer than its predecessors, its sculpted fender flares and unique sheetmetal only slightly disguise its Impreza rootstock. But the WRX has always been more about performance than style, anyway, and Subaru says the new car will top its predecessor on that front. The '14 WRX's 2.0-liter turbocharged boxer-four squeezes out 268 hp and 258 lb-ft -- just a little bit more than the outgoing 2.5-liter turbo-equipped car.

Mercedes fixes diesel injector problems

Mercedes say that a new injector system for C Class and E Class diesels with the OM651 engine have now been fixed. So extensive was the problem that many owners were waiting months for their cars to be fixed as Mercedes struggled with a mounting pile of broken cars and injectors that were failing. Mercedes tell us that the problem was fixed with the release of new injectors later in 2010, but Cars UK readers have continued to complain about their cars needing multiple visits to dealers with injectors failing multiple times (that original story garnered more than 500 comments from disgruntled Mercedes owners).

2014 Acura TSX starts at $31,530

The sporty Acura TSX and TSX Sport Wagon return for 2014 with minor changes. The base TSX with a 201-hp I4 comes with a five-speed automatic transmission for $31,530, including destination. That’s a $125 bump from last year.