The 2023 BMW M8 Gran Coupe is the big, brash, and beautiful four-door member of the M8 family. We separately review this model’s coupe and convertible siblings. The 2023 M8 Gran Coupe has a cornering grip and stopping power to embarrass lighter sports cars.

BMW makes a handful of changes to the M8 Gran Coupe for the 2023 model year. Along with dark accents inside the adaptive LED headlights, there’s a wider selection of metallic paint colors that includes Skyscraper Grey, Brooklyn Grey, Isle of Man Green, Tanzanite Blue II, and Frozen Pure Grey.

There’s also an option to replace BMW’s classic roundel with the M logo on the hood, trunk, and wheel hubs. Inside, the 2023 BMW M8 Gran Coupe can now be fitted with the lightweight M Carbon competition seats that debuted on the latest-generation M3 sedan and M4 coupe.

There’s a new color option for the Merino leather and microsuede upholstery, and the touchscreen grows from 10.3 to 12.3 inches.

ENGINE AND IMPLEMENTATION

The 2023 BMW M8 Gran Coupe is powered by a lusty twin-turbo 4.4-liter V-8 that makes 617 horsepower, thanks to the adoption of the previously optional Competition package. The exceptionally smooth engine sends that power to all four wheels via a responsive eight-speed automatic transmission.

However, tail-out antics are made possible by a selectable rear-wheel-drive mode that routes all the V-8’s fury to the back. This rocket-powered four-door shot to 60 mph in just 2.7 seconds and completed the quarter-mile in 10.8 ticks at 129 mph.

These numbers are impressive for some supercars, let alone a sedan that weighs more than 4300 pounds. While it’s furiously quick and provides more than 1.0 g of cornering grip, the big M8 suffers from an indifferent steering feel and a stiff ride that compromises its comfort.

A specially tuned adaptive suspension comes standard, and it can be adjusted through the sedan’s customizable or preset drive modes, but even the softest damper setting isn’t soft at all.

Its strong brakes will haul it down from 70 mph in an impressively short 147 feet, but the Bimmer’s brake-by-wire system returned uneven responses through the pedal, regardless of the two available brake settings­ (Comfort and Sport).

ENERGY AND REAL-WORLD MPG

With estimates of 15 mpg in the city and 21 mpg on the highway, the V-8-powered M8 Gran Coupe certainly won’t be confused for a hybrid. However, those figures are on par with other fast four-doors in this fast-sedan class, such as the RS7 (15 mpg city, 22 highway).

We haven’t tested the M8 GC on our 75-mph highway fuel-economy route, which is part of our extensive testing regimen, but when we get the chance we can evaluate its real-world mpg. For more information about the 2023 BMW M8 Gran Coupe’s fuel economy, visit the EPA’s website.

INTERIOR, CONVENIENCE, AND BOOTH

The 2023 BMW M8 Gran Coupe features an exquisitely appointed interior that looks as rich as it feels. While the design is more dignified than dazzling, the four-door M8 provides plentiful rear passenger space.

It also offers a cornucopia of desirable standard features such as a 12.3-inch digital gauge cluster, 16-way power front seats with memory settings, heating, and ventilation, four-zone climate control, leather upholstery, and more.

Buyers can also enhance the cabin with novel color schemes and fancy trims as well as a Comfort Seating package. This adds heated seats throughout along with power sunshades for rear-seat passengers.

Likewise, the lightweight M Carbon front seats are optional, but their stiff lower side bolsters make ingress and egress a pain, and they might be generally too aggressive for most drivers.

While the back seat features three seatbelts–unlike the rear buckets in the GT63 S–the middle seat is best left unoccupied except for all but the shortest trips.

The 2023 BMW M8 Gran Coupe’s trunk provides 11 cubic feet of storage space, but that’s 15 cubes less (25 total) than the volume under the RS7’s rear hatch.

IN-VEHICLE INFOTAINMENT AND INTERCONNECTIONS

Every M8 Gran Coupe is equipped with a 12.3-inch touchscreen infotainment system that can also be operated with a rotary controller on the center console.

Along with its 16-speaker Harman/Kardon sound system, the brawny BMW has a Wi-Fi hotspot and Apple CarPlay and Android Auto as standard. Those who aren’t satisfied with the default audio unit can upgrade to a more powerful Bowers & Wilkins setup.

PROTECTION AND DRIVER-ASSISTANCE ASPECTS

While copious driver-assistance technology is available, everything except a forward-collision warning and automated emergency braking costs extra.

For more information about the 2023 BMW M8 Gran Coupe’s crash-test results, visit the National Highway Traffic Safety Administration (NHTSA) and Insurance Institute for Highway Safety (IIHS) websites.

PHOTOS

2023 BMW M8 Gran Coupe

2023 BMW M8 Gran Coupe

2023 BMW M8 Gran Coupe

2023 BMW M8 Gran Coupe

2023 BMW M8 Gran Coupe

FULL SPECIFICATIONS

2020 BMW M8 Competition Gran Coupe

VEHICLE TYPE
front-engine, rear-/all-wheel-drive, 5-passenger, 4-door sedan

PRICE AS TESTED
$167,245 (base price: $144,995)

ENGINE TYPE
twin-turbocharged and intercooled DOHC 32-valve V-8, aluminum block and heads, direct fuel injection
Displacement
268 in3, 4395 cm3
Power
617 hp @ 6000 rpm
Torque
553 lb-ft @ 1800 rpm

TRANSMISSION
8-speed automatic

CHASSIS
Suspension (F/R): multilink/multilink
Brakes (F/R): 15.7-in vented, cross-drilled ceramic disc/15.0-in vented, cross-drilled ceramic disc
Tires: Michelin Pilot Sport 4S, F: 275/35ZR-20 (102Y) ★ R: 285/35ZR-20 (104Y) ★

DIMENSIONS
Wheelbase: 119.2 in
Length: 200.9 in
Width: 76.5 in
Height: 55.9 in
Passenger volume: 97 ft3
Cargo volume: 11 ft3
Curb weight: 4377 lb

C/D TEST RESULTS
60 mph: 2.7 sec
100 mph: 6.5 sec
1/4 mile: 10.8 sec @ 129 mph
150 mph: 15.9 sec
Results above omit 1-ft rollout of 0.2 sec.
Rolling start, 5–60 mph: 3.7 sec
Top gear, 30–50 mph: 2.4 sec
Top gear, 50–70 mph: 2.5 sec
Top speed (mfr’s claim): 190 mph
Braking, 70–0 mph: 147 ft
Braking, 100–0 mph: 291 ft
Roadholding, 300-ft-dia skidpad: 1.02 g

C/D FUEL ECONOMY
Observed: 16 mpg

EPA FUEL ECONOMY
Combined/city/highway: 17/15/21 mpg

C/D TESTING EXPLAINED

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