http://www.edmunds.com/bmw/activehybrid-7/2013/
"Compared to other luxury flagship hybrid sedans like the 2013 Lexus LS 600h L, 2013 Mercedes S400 Hybrid and 2013 Porsche Panamera Hybrid, the BMW does fare pretty well. It's quicker and more efficient than the Mercedes and less expensive than the Lexus and Porsche. Yet if saving the planet in luxurious style is really your thing, we'd recommend checking out the all-electric Tesla Model S. From a cost-to-benefit standpoint, the 2013 BMW ActiveHybrid 7 simply doesn't earn a "buy" rating.
"Compared to other luxury flagship hybrid sedans like the 2013 Lexus LS 600h L, 2013 Mercedes S400 Hybrid and 2013 Porsche Panamera Hybrid, the BMW does fare pretty well. It's quicker and more efficient than the Mercedes and less expensive than the Lexus and Porsche. Yet if saving the planet in luxurious style is really your thing, we'd recommend checking out the all-electric Tesla Model S. From a cost-to-benefit standpoint, the 2013 BMW ActiveHybrid 7 simply doesn't earn a "buy" rating.