When you're talking about fuel economy don't forget about the oil usage. I have 3000 miles on my new 2009 S63 and I've put 2 qts. of oil in it already. Went to the Mercedes service counter and was advised--"That's pretty good, Mercedes specs are 800 miles a quart." I thought he was kidding, but Mercedes customer service confirmed. But, a little piece of mind---"it doesn't BURN oil --it just USES a quart every 800 miles. Why don't they put this in their commercials !
Sport Package ($5,690 -- includes 19-inch AMG five-spoke wheels, sport body styling); Premium Package ($4,990 -- includes rearview camera, Parktronic, Keyless Go, Drive-Dynamic multicontour front seats with massage feature, Night View Assist); Active Body Control ($3,960); Distronic Plus Package ($2,880 --includes Distronic Plus with Parking Guidance and Blind Spot Assist); Savanna/Cashmere Premium Leather ($1,330); Panorama Sunroof ($1,050); iPod Integration Kit ($425)
Responds well to brake-torque but not too much wheelspin. Smooth linear power delivery, with an aggressive exhaust note. Shifts are buttery smooth, but not very quick.
Crazy-powerful brakes that don't fade a bit. Very little dive but the pedal is a little soft (always). Belt cinches tightly when ABS engages.
In both skid pad and slalom tests, I couldn't detect a bit of difference with ESP on or off. Also, the Active Body Control is very strange, but works amazingly well -- keeping all four tires firmly planted on the ground. ABC in the skid pad means zero body roll. Very slight corrections from ESP keep it spot-on in the circle. Steering feels a tad light. On the slalom course, ABC leans the car INTO the turn like a slalom skier. Strange! In the end, ABC and ESP made every run highly repeatable and easy-peasy. Same speed with ESP off or on.