2018 Bmw M5
The Verdict
The 2018 Bmw M5 has 4 owner complaints filed with NHTSA. The most reported issues are engine (3 complaints) and electrical (1 complaints). With a Klunk Score of 99/100, it earns a "Smooth Ride" rating. If you're shopping for a Bmw M5, consider the 2010 model year which has 75% fewer complaints.
Safe Bet
The 2010 has 75% fewer complaints
View the 2010 Bmw M5 dashboard →
Klunk Score: Smooth Ride
This vehicle year has significantly fewer complaints than average. A reliable choice.
How is this calculated?
The Klunk Score ranks this vehicle year against all others in our database based on total owner complaints filed with NHTSA. 100 = fewest complaints (top tier), 0 = most complained-about. Scores above 60 are better than average; below 40 means more problems than most.
Recalls 2
Active safety recalls from NHTSA for this vehicle year.
BMW of North America, LLC (BMW) is recalling certain 2018 BMW M5 vehicles. The fuel level sensor in the fuel tank may become stuck against an in-tank fuel line, causing the fuel gauge to display a...
Risk
An incorrect fuel reading may lead to the vehicle stalling and increase the risk of a crash.
Remedy
BMW will notify owners, and dealers will secure the in-tank fuel line to keep the fuel line from contacting the fuel level sensor, free of charge. The recall is expected to begin September 2018. ...
Reported Apr 10, 2026
BMW of North America, LLC (BMW) is recalling certain 2018 BMW M5 vehicles. In certain driving conditions, the engine control unit software may cause the fuel pump to stop.
Risk
If the fuel pump stops, the vehicle will stall, increasing the risk of a crash.
Remedy
BMW will notify owners, and dealers will update the engine control unit software, free of charge. The recall began on June 25, 2018. Owners may contact BMW customer service at 1-800-525-7417.
Reported Apr 10, 2026
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Under the Hood
Each number is a complaint. Darker = bigger problem.
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Worst Problems
Complaints
BMW issued a stop sale on 2017-2023 bmw F90 M5 chassis regarding the expansion tank failure. All vehicles should be affected by the recall. My current vehicle is experiencing the issues stated on the recall notice. Expansion tank is failing and causing coolant to seep into engine bay
The coolant tank on my 2018 M5 failed causing a coolant leak. This is a highly documented problem on the forums and mine needed replacement at 22k miles. The bigger issue is the location of the tank because the coolant leaks on the ignition coils and fuel injectors causing failures later. My coils and spark plugs needed replacement along with the tank. This is unacceptable and BMW needs to address this issue.
This is for the front passenger seat only.The idrive system will give an error for the passenger restraint system and will mention there is a seat belt issue and turn off the airbag. This is intermittent and will happen with or without a passenger. I contacted BMW about it but because it is not presently acting out, they won't do anything about it unless I want to just start paying for new parts and do "exploratory" surgery on it trying to resolve this. Unacceptable as this has been happening for a couple of years and is a danger because of it happens during an accident it could prove fatal.
I ALMOST HAD A TERRIBLE ACCIDENT IN MY 2 WEEK OLD 2018 M5 ON THE 1-95 HIGHWAY ON THE NIGHT OF MAY 25, 2018 AT ABOUT 9:45PM. WITHOUT WARNING, AT ABOUT 65MPH, THE CAR JERKED FOR ABOUT 3SECONDS , KICKED OUT OF DRIVE INTO NEUTRAL AND STARTED DECELERATING. I WAS IN THE MIDDLE LANE SURROUNDED BY SPEEDING VEHICLES. I MANAGED TO GUIDE IT TO THE SHOULDER AND TURNED OFF THE IGNITION FOR 2MINUTES, AFTER WHICH I RE-STARTED THE CAR AND WAS ABLE TO ENGAGE DRIVE. I CONTACTED MY DEALERSHIP TODAY, ONLY TO BE INFORMED, THIS WAS AS A RESULT OF COMPUTER GLITCH CONTROLLING THE FUEL PUMP CAUSING IT TO SHUT OFF WITHOUT WARNING. I WAS TOLD THERE HAS BEEN A SOFTWARE PATCH TO REMEDY THIS PROBLEM. IF IT IS TRUE, I BELIEVE THE CORRECTION SHOULD HAVE BEEN DONE BEFORE THE CAR WAS PICKED UP OR PROMPTLY NOTIFIED TO RETURN THE CAR FOR FIXING. I COULD HAVE BEEN KILLED ON THE HIGHWAY LAST NIGHT IF NOT FOR MY PROMPT SITUATION AWARENESS AND EXPERIENCE IN HANDLING THIS POWERFUL CAR WHICH IS MY FOURTH M5 SINCE 2006. OWNERS NEED TO BE NOTIFIED IMMEDIATELY FOR FIXES LIKE THIS THAT CAN LEAD TO FATAL INCIDENTS. I DON'T KNOW IF ANYTHING SIMILAR HAS BEEN REPORTED ABOUT THIS MODEL