Lot WBSJF0C56JB283920: 2018 BMW M5

The 2018 BMW M5 (F90 generation) is generally reliable for a high-performance luxury sedan, but there are some common issues to be aware of:

Top Problem Areas:

1. Engine & Cooling (Most Common)

• The S63 4.4L twin-turbo V8 has a few weak points. Engine-related complaints account for about 29% of all owner reports filed with NHTSA, with issues typically surfacing around the 750-1,000 mile mark. Common issues include:
  • VANOS solenoid problems – can cause rough idle, reduced power, and warning lights
  • Oil leaks – particularly from the valve cover gaskets and oil filter housing gasket
  • Coolant leaks – coolant bypass hoses and connections can fail

2. Fuel System

• There was a recall (18V323000) for engine control software that could cause the fuel pump to stop in certain driving conditions
• Another recall (18V473000) addressed fuel tank assembly issues
• Fuel system complaints make up about 14% of reported problems

3. Brakes

• Some owners have reported service brake issues – this ranks as the #2 most common problem category

4. Airbags & Seat Belts

• Separately, there are occasional reports related to airbag and seat belt systems (14% each of complaints)

The Good News: Despite these potential issues, the 2018 M5 has only 10 reported problems across about 1,905 US-sold vehicles, giving it a decent reliability rating for its class. Many issues were addressed under warranty or recall.

Pre-Purchase Tip: On the specific car you’re looking at with ~73K miles, many of these early-life issues would likely have already surfaced and been addressed. I’d still recommend a pre-purchase inspection focusing on any residual oil leaks around the engine and verification that all recalls were completed.

Want me to help you find similar M5s, or do you have questions about any of these specific issues?