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2018 BMW

M5

Auto (S8), 8 cyl, 4.4 L, Turbo

BMW M5: best and worst years
2018 BMW M5 (photo 1 of 3)

Photo may show a different model year; you're viewing the 2018.

PhotoAlexander-93CC BY-SA 4.0Wikimedia Commons

Overview

Body
Midsize CarsEPA, from EPA, last updated 6/22/2026
Drivetrain
All-Wheel DriveEPA, from EPA, last updated 6/22/2026
Transmission
Automatic (S8)EPA, from EPA, last updated 6/22/2026
Powertrain
GasEPA, from EPA, last updated 6/22/2026
Fuel
PremiumEPA, from EPA, last updated 6/22/2026

Engine & performance

HP
599
Power to weight
0.137 hp/lb
Axle ratio
3.15
Cyl
8EPA, from EPA, last updated 6/22/2026
Aspiration
TurbochargedEPA, from EPA, last updated 6/22/2026
Start-stop system
YesEPA, from EPA, last updated 6/22/2026

Efficiency

MPG Hwy
21 mpgEPA, from EPA, last updated 6/22/2026
MPG City
15 mpgEPA, from EPA, last updated 6/22/2026
MPG Comb
17 mpgEPA, from EPA, last updated 6/22/2026
Fuel $/yr
$4,550EPA, from EPA, last updated 6/22/2026
CO₂
521 g/miEPA, from EPA, last updated 6/22/2026
Eco Score
3/10EPA, from EPA, last updated 6/22/2026
Smog score
3/10
Elec. Range
0 miEPA, from EPA, last updated 6/22/2026
SmartWay certified
No

Dimensions & capacity

Length
195 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Width
74 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Height
58 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Wheelbase
117 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Curb Weight
4,370 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Pass. Vol
99 ft³EPA, from EPA, last updated 6/22/2026
Cargo Vol
14 ft³EPA, from EPA, last updated 6/22/2026

Safety NHTSA, model year

Recalls
3
Owner complaints
4

Reported problems NHTSA owner complaints, model year

  • ENGINE29%
  • AIR BAGS14%
  • FUEL/PROPULSION SYSTEM14%
  • POWER TRAIN14%
  • SEAT BELTS14%
  • UNKNOWN OR OTHER14%

Source: NHTSA owner complaints, 7 total.

BMW M5: best and worst years

Known issues manufacturer service bulletins, model year

127 service bulletins filed with NHTSA for this model year

  • Sep 19, 2025ENGINEB011724

    The Fuel Injector Condition-Specific Repair Coverage Program applies to qualifying repairs for the required replacement of one or more the fuel injectors which were determined to have failed due to a buildup of external corrosion in the engine’s center fuel injector bore area that resulted after this location was periodically contaminated by engine coolant residue over time. This special program’s coverage is 15 years / 150,000 miles as determined from the vehicle's original in-service / first d

  • Jun 11, 2025AIR BAGSB720417

    The Supplemental Restraint Systems (SRS) Front Passenger’s Seat Occupancy Capacitive Interior Sensor (CIS) Mat for defects in materials and/or workmanship that causes a false seat occupancy alert to occur has been extended to 10 years / 120,000 miles as determined from the vehicle's original inservice / first delivery date.

  • Jan 14, 2025SERVICE BRAKESB340921

    A turbine-like noise can be heard from the rear axle while deceleration during the first 300 miles of operation when braking from low speed.

  • May 16, 2024ENGINEB170324

    Under certain driving situations, coolant leaks onto the fuel injectors on cylinder bank (5-8).

  • Mar 14, 2024EXTERIOR LIGHTINGB630418

    One or more of the LED daytime running lights are dim or discolored.

  • Jan 16, 2024VISIBILITY:POWER WINDOW DEVICES AND CONTROLSB510819

    The basic conditions for initializing the power windows are not met.

  • Jan 11, 2024ELECTRICAL SYSTEMB611305

    The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information for the dealer on how to handle “discharged battery” complaints.

  • Jan 8, 2024STEERINGB360121

    At low outside temperatures (below 40 degrees F) and slow driving speeds (i.e. when parking, maneuvering)with a large steering angle, the front end can be slightly axially misaligned. This can be felt (jerking)/ heard via an acoustic acknowledgement (clunk) as seen at the 11 second mark of the video. See attached video V36 01 21.

  • and 119 more

Source: NHTSA manufacturer communications (technical service bulletins).

Warranty manufacturer terms, by make

Basic
4 yr / 50k mi
Powertrain
4 yr / 50k mi
Roadside assistance
4 yr
Maintenance
3 yr / 36k mi
EV battery
8 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.