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2018 BMW 6 Series Gran Coupe 650i xDrive

The 2018 BMW 6 Series Gran Coupe 650i xDrive is a 445-hp 4.4-liter coupe with an 8-speed sport automatic and all-wheel drive. It starts at $96,000 MSRP and is rated at 19 mpg combined.

It makes 445 horsepower at 5,500 rpm and 480 lb-ft of torque at 2000-4500 rpm. EPA fuel-economy estimates are 16 mpg city and 25 mpg highway (19 mpg combined).

The 6 Series Gran Coupe measures 197.2 inches long on a 116.9-inch wheelbase and has a curb weight of 4,570 lb.

Spec Value
Vehicle
Body TypeCoupe
PowertrainGas
Price
MSRP$96,000
MSRP with Destination$96,995
Destination Charge$995
Engine
Engine TypeN63B44O1
Displacement4.4 L
Horsepower445 hp @ 5,500 rpm
Torque480 lb-ft @ 2000-4500 rpm
ValvetrainDOHC, VALVETRONIC variable valve lift, twin-turbocharged 'hot-vee' layout
Bore and Stroke89 x 88.3
Compression Ratio10.0:1
Injection TypeHigh Precision Direct Injection
Drivetrain
Drive TypeAWD
Transmission
Transmission8-speed Sport Automatic (ZF 8HP70)
1st Gear4.714
2nd Gear3.143
3rd Gear2.106
4th Gear1.667
5th Gear1.285
6th Gear1
7th Gear0.839
8th Gear0.667
Reverse3.317
Final Drive2.813
Fuel Economy
City16 MPG
Highway25 MPG
Combined19 MPG
Recommended FuelPremium
Tank Capacity18.5 gal
Suspension
Front SuspensionDouble wishbone front suspension (aluminum)
Rear SuspensionMulti-link rear suspension (aluminum)
Turning Diameter39.2 ft
Brakes
Front Brake Disc14.7 in (vented)
Rear Brake Disc13.6 in (vented)
Tires & Wheels
Wheels Front19 x 8.5
Wheels Rear19 x 8.5
Tires Front245/40 R19 98V XL
Tires Rear245/40 R19 98V XL
Dimensions & Weight
Length197.2 in
Width74.6 in
Height54.8 in
Wheelbase116.9 in
Front Track62.8 in
Rear Track65.3 in
Ground Clearance5 in
Cargo Volume16.2 ft³
Curb Weight4,570 lbs
Weight Distribution (F/R)53% / 47%
Interior
Headroom Front40.6 in
Headroom Rear37 in
Legroom Front42.1 in
Legroom Rear35.3 in
Shoulder Room Front56.7 in
Shoulder Room Rear54.6 in

Safety & Recalls

NCAP safety ratings

Tested, but no star ratings were published (2018 BMW 6 Series C AWD).

Recalls

No recalls on file with NHTSA for the 2018 BMW 6 SERIES.

11 owner complaints to NHTSA for the 2018 BMW 6 SERIES

Owner Complaints

11 owner complaints filed with NHTSA for the 2018 BMW 6 SERIES (1 mention a crash). See all on nhtsa.gov

Most-cited areas
Air Bags2
Forward Collision Avoidance2
Unknown Or Other2
Electrical System1
Engine1
Lane Departure1
A complaint can cite more than one area.
Most recent complaints
Jun 22, 2026 · Vehicle Speed Control
“The contact owns a 2018 BMW 640XI. The contact stated that while pulling up to a red traffic light, the brake pedal was depressed; however, the engine revved unexpectedly, and the vehicle unintendedly…”
Mar 19, 2026 · Unknown Or Other
“I hear a crackling or a popping sound coming from the windshield area as I’m driving. It is irregular and going over bumps seems to trigger it but yesterday as I was driving on a smooth highway with…”
Aug 26, 2024 · Air Bags
“My BMW's passenger side airbag malfunction light randomly came on and will not turn off. When I went to the dealer, BMW quoted apprx. $3000 to replace the seat sensor mat which they said probably got…”
Mar 31, 2024 · Air Bags
“Consistent passenger restraint / passenger airbag failure warning. Took vehicle to BMW dealership and was told that the passenger seat must have moisture damage, causing the issue. There have been no…”
Dec 7, 2023 · Unknown Or Other
“when opening the Panoramic Sunroof while driving, the curtain would not retract and sagged. It totally blocks the rear view and there is no way to fix it while driving. also if you have a car seat…”

Complaints are unverified reports submitted to NHTSA by owners. They cover the whole model year, not a specific trim, and a count alone doesn't show how common a problem is.

Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 2018 BMW 6 SERIES. US-market vehicles only; data cached for up to 7 days.

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