BMW will expand its lineup of hybrid models with a gas/electric version of the new 5 Series sedan. In typical BMW fashion the car pictured above is considered a concept car, which as far as we can figure just means that it's the upcoming 5 Series ActiveHybrid with those big, shiny stickers on the sides.

The 5 Series hybrid isn't going to challenge the Prius for any fuel-efficiency titles. BMW reckons that the 40-kW electric motor, which in the case of the 5 Series augments the power of a turbocharged inline-6 gas engine, should wage a 10 percent improvement in fuel economy. The system, of course, includes regenerative braking and an automatic start/stop function.

We'll give you more details on this car from the floor of the Geneva auto show next week.

More photos after the jump…