2018 BMW 5 Series M550i xDrive
Unverified
All photo credits
- Photo: 2018 BMW 540i xDrive with M Sport package in Alpine White, front left, 2025-10-06 by Elise240SX, CC BY-SA 4.0, via Wikimedia Commons
- Photo: BMW G30 530i xDrive M Sport Carbon Black (21) by Damian B Oh, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2018 BMW 540i xDrive with M Sport package in Alpine White, rear left, 2025-10-06 by Elise240SX, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2021 BMW 5-Series 520d M Sport (Rear) by Chanokchon, CC BY-SA 4.0, via Wikimedia Commons
- Photo: BMW G30 LCI Exclusive Nappa Leather Mocha (1) by Damian B Oh, CC BY-SA 4.0, via Wikimedia Commons
The 2018 BMW 5 Series M550i xDrive is a 456-hp 4.4-liter twin-turbocharged V8 with an 8-speed automatic. It starts at $73,900 MSRP and is rated at 19 mpg combined.
It makes 456 horsepower at 5,500 rpm and 480 lb-ft of torque at 1800 rpm. EPA fuel-economy estimates are 16 mpg city and 25 mpg highway (19 mpg combined).
The 5 Series measures 195.4 inches long on a 117.1-inch wheelbase and has a curb weight of 4,372 lb.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Sedan |
| Powertrain | Gas |
| Price | |
| MSRP | $73,900 |
| MSRP with Destination | $74,895 |
| Destination Charge | $995 |
| Engine | |
| Engine Type | Twin-Turbocharged 4.4L V8 (BMW N63B44O2) |
| Displacement | 4.4 L |
| Horsepower | 456 hp @ 5,500 rpm |
| Torque | 480 lb-ft @ 1800 rpm |
| Valvetrain | DOHC 32V |
| Bore and Stroke | 89 x 88.3 mm |
| Compression Ratio | 10.5:1 |
| Drivetrain | |
| Drive Type | All Wheel Drive |
| Transmission | |
| Transmission | 8-Speed Automatic |
| 1st Gear | 5 |
| 2nd Gear | 3.2 |
| 3rd Gear | 2.14 |
| 4th Gear | 1.72 |
| 5th Gear | 1.31 |
| 6th Gear | 1 |
| 7th Gear | 0.82 |
| 8th Gear | 0.64 |
| Reverse | 3.48 |
| Final Drive | 2.81 |
| Fuel Economy | |
| City | 16 MPG |
| Highway | 25 MPG |
| Combined | 19 MPG |
| Recommended Fuel | Premium Unleaded |
| Suspension | |
| Turning Diameter | 40.2 ft |
| Tires & Wheels | |
| Wheels Front | 19 x 8 in, Aluminum |
| Wheels Rear | 19 x 9 in, Aluminum |
| Tires Front | P245/40YR19 |
| Tires Rear | P275/35YR19 |
| Dimensions & Weight | |
| Length | 195.4 in |
| Width | 73.5 in |
| Height | 57.8 in |
| Wheelbase | 117.1 in |
| Front Track | 63 in |
| Rear Track | 62.9 in |
| Cargo Volume | 18.7 ft³ |
| Curb Weight | 4,372 lbs |
| Interior | |
| Headroom Front | 38.8 in |
| Headroom Rear | 37.5 in |
| Legroom Front | 41.4 in |
| Legroom Rear | 36.5 in |
| Shoulder Room Front | 58.7 in |
| Shoulder Room Rear | 55.9 in |
Similar cars
Rivals to the 2018 BMW 5 Series M550i xDrive with similar size, power and price from around the same years.
Safety & Recalls
NCAP safety ratings
Tested, but no star ratings were published (2018 BMW 5 Series 4 DR AWD).
Recalls
No recalls on file with NHTSA for the 2018 BMW 5 SERIES.
81 owner complaints to NHTSA for the 2018 BMW 5 SERIES
Owner Complaints
81 owner complaints filed with NHTSA for the 2018 BMW 5 SERIES (5 mention a crash, 4 an injury). See all on nhtsa.gov
| Air Bags | 35 |
| Seat Belts | 24 |
| Seats | 14 |
| Electrical System | 13 |
| Unknown Or Other | 9 |
| Engine | 8 |
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 5 SERIES. US-market vehicles only; data cached for up to 7 days.