The BMW M8 is a two-door grand tourer that shares the M5's V8 in a lower, wider body.
The BMW M8 carries the M5's 617 horsepower V8 in a two door grand tourer that sits lower, wider and longer, tuned to gather speed from speed on an open road rather than dart through a canyon. Renters book it as a pair rather than a family, for a run up the coast or across a state line where the hours behind the wheel are the weekend.
The M8 feels heavy and wide at parking speed and then settles into a smooth, quiet cruiser, with steering that is heavy but precise and matches the tension of the road in your hands. That makes it a car for hours behind the wheel rather than a single afternoon.
The BMW M8 is booked by a driver and a passenger planning a long run rather than a family group, since the back seat is occasional and the character of the car lives in covering distance smoothly. It suits a trip up the coast, a cross state drive, or any weekend built around hours behind the wheel rather than a single afternoon. Renters who considered the M5 but do not need the extra back seat choose the M8 for its lower, wider stance and its two door proportions. It is also booked by drivers who already know the M5's V8 and want that same engine in a body built purely for distance.
BMW sells the M8 in a single performance grade across three body styles, with a lower-output version offered earlier in the run. We run the Competition coupe, the closed two-door.
The BMW M8 in base form made 600 hp from a twin-turbo 4.4 liter V8, with all-wheel drive and a selectable rear-drive mode. It used softer engine mounts and a quieter exhaust than the Competition and came as a coupe or a convertible. BMW dropped it and left Competition as the only grade. On the road the gap to a Competition is small, and most renters would never pick it out. We do not run it.
The BMW M8 Competition Coupe makes 617 hp, adds firmer engine mounts and a sport exhaust, and is the version in our fleet. A renter feels a supportive all-day seat, heavy and precise steering, and a chassis that settles into a long-distance cruiser above freeway speed. The quad-tip exhaust idles quietly and opens under load, and the brake pedal has a Comfort setting worth using in city driving.
The BMW M8 Competition Convertible uses the same 617 hp V8 under a fabric roof that folds away in about 15 seconds while the car is rolling slowly. It carries extra weight and less trunk space than the coupe and gives up some structural rigidity for the open roof. The trade is the V8 exhaust note with nothing between you and it. We do not run it.
The BMW M8 Competition Gran Coupe is the 4-door body on a longer wheelbase, with the same 617 hp V8 and rear seats an adult can actually use. Inside BMW's own lineup it overlaps heavily with the M5, which is why it sells in small numbers. It is the M8 to pick when the day includes passengers, since the coupe's rear seats are a formality. We do not run it, and it is the rarest of the three bodies on the road.