There's a wide variety of stories today. We look at Tesla's lack of transparency, a possible electric all-wheel drive system from Audi, and why BMW is confident low gas prices won't hurt sales of its diesel models. All this and more on Green Car Reports.

Watch people react to the "Insane" mode of the Tesla Model S P85D in this (NSFW) video.

Tesla typically doesn't discuss important operating metrics like sales numbers, but do owners and investors care about that?

Low gas prices won't hurt sales of BMW diesel models, the company's North American chief says.

Find out from one reader what it's like to drive a very small electric car year-round in the Midwest.

Audi's famed Quattro all-wheel drive system could go electric as "e-Quattro" in the next-generation A4.

Check out the 2016 BYD Tang, the first of four new plug-in hybrids from the Chinese carmaker.

The latest diesel engines for heavy-duty trucks are as clean as expected under EPA rules, a new study says.

Accidents happen, but even your first one can raise insurance rates for years, a study finds.

Finally, the 2015 Volkswagen Golf GTD Variant is a sporty diesel wagon that won't come to the U.S.


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