
Alpina makes extensive mechanical modifications to the 7 Series. For starters, BMW's 4.4-liter V8 engine is significantly tweaked, with enlarged turbos, high-performance pistons, reinforced cylinder heads, and other modifications that raise horsepower to 500 and torque to 516 ft./lbs. (up from 400 hp. and 450 ft./lbs. of torque for the BMW 750i). Cooling capacity is dramatically expanded, the engine fan is enlarged and the rear differential has a shell made of cast iron, rather than aluminum, to improve heat transfer. Enlarged brakes are added, as are big, beautiful 21-in. spoked wheels clad with Michelin performance tires. Special front and rear spoilers and a new front fascia are added, too.
The car's springs are stiffened and the chassis lowered a fraction of an inch closer to the road. BMW's electronic suspension system is reconfigured to emphasize the difference between the "comfort," "normal," and "sport" settings. BMW's six-speed automatic transmission is beefed up and sport-tuned via Alpina's proprietary shift controls.
In width, length, interior space, and luggage capacity, the B7 is comparable to an equivalent BMW (which is to say the B7 is roomy and has a 14-cu.-ft. trunk). The classic paint job is a metallic Alpina blue, but the B7 is also offered in all the colors the 7 Series comes in.
The Alpina comes with all of a BMW's standard safety gear, including a full complement of air bags and stability and traction control. Fuel economy is similar, too. The B7 is rated to get 15 miles-per-gallon in the city and 21 on the highway. (City mileage drops to 14 with all-wheel drive.) That's about the same as the 2011 BMW 750i, which is rated at 15/22 with rear-wheel drive, and 14/20 with all-wheel drive.
Not surprisingly, however, an Alpina is considerably pricier than a comparable BMW. The B7 starts out at about $124,000, including destination and gas-guzzler taxes—about $40,000 more than a 2011 BMW 750i. Add $3,000 to the B7's price for all-wheel drive and $3,900 for a long wheel base. However, the B7 comes packed with around $14,000 worth of standard equipment that is optional on a comparable BMW (heads-up display, premium sound system, full leather interior, and so forth), reducing the real price premium.


One of the key differences from previous concept cars is the Taiki’s rear wheels, which seem to stick out a bit, and are covered by a sort-of simulated wheel well. The effect of this is the illusion that the rear wheels are not protected as part of the chassis, but if you look at a picture of the car from behind the wheels look more integrated.
Mazda also introduced the Premacy Hydrogen RE Hybrid, which the company claims gets 40% better output compared to the RX-8 Hydrogen RE. The end result is faster acceleration and a fuel range of roughly 200 km (124 mi). Five adults should be able to sit comfortably into this hydrogen/gas hybrid. 



