The BMW 7 Series specifications describe a single car, the 740i M Sport. Its engine is a 3.0 litre inline six turbo petrol with a mild hybrid. Output is 400 PS, quoted as 394 bhp, with 540 Nm of torque. An eight speed automatic drives the rear wheels. Peak power spans 5200 to 6250 rpm.
The 48 volt mild hybrid assists the engine at low speed. It cannot move the car on electricity alone. Peak torque runs from 1850 to 5000 rpm, so the flagship pulls without fuss. The engine is a smooth straight six, a BMW signature. BMW rates it at 12.61 kmpl on the ARAI cycle. A large, heavy sedan with a big engine will read lower in town. See what that means for real running cost.
The dimensions explain the limousine feel. Length is a long 5391 mm on a 3215 mm wheelbase. Width is 1950 mm and height 1544 mm, giving real presence. The long wheelbase is what creates the rear cabin space. It also smooths the ride over broken surfaces. Ground clearance is 136 mm, tuned for smooth roads rather than rough ones.
The 74 litre tank suits long trips between fills. The 540 litre boot is generous for a sedan this focused on the back seat. Seating is for five, though the rear pair travel best. Six paint finishes are offered, from Mineral White to Vancouver Green. The M Sport package comes as standard on the sole trim. Comfort and cabin technology sit at the top of the range.