European magazine Autocar confirmed today that the Porsche Cajun, the automaker’s upcoming luxury compact SUV, will be powered by a diesel V6 engine. The engine, provided by Porsche’s sister company, Audi, will also supply power to the Audi Q5, which is set to debut early next year.

Jalopnik predicts that the twin-turbocharged 3.0-liter diesel engine will supply 309 horsepower and 479 pound-feet of torque to the baby SUV. This would be the first diesel engine in a Porsche, although Audi and the two companies’ parent, Volkswagen, already feature diesel options in multiple cars and SUVs.

Inside Line writes that the Porsche Cajun won’t hit the market until sometime in 2014, but when it does, it will be priced below the larger Porsche Cayenne and competitively with the Mercedes-Benz GLK. The GLK starts at $35,500, and the Cayenne has a base MSRP of $47,700. If you’ve been looking forward to buying a luxury compact SUV with a diesel engine, you’ll have to wait until 2014 for the diesel Cajun, and likely the diesel Audi Q5 as well. In the meantime, both the gas-powered Audi Q5 and the Infiniti EX get great fuel economy, with EPA ratings of 20/27 mpg city/highway and 17/24 mpg city/highway, respectively. Plus, the Infiniti EX earned our 2011 Best Luxury Compact Crossover for the Money Award for its combination of performance, value and price. Both the Audi Q5 and the Infiniti EX start at $35,200.

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