Manufacturer-recommended service intervals and open recall alerts for your 2018 Bentley Mulsanne.
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BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Campaign #18V632000 · Sep 14, 2018
Issue: Bentley Motors, Inc. (Bentley) is recalling certain 2018 Bentley Mulsanne and 2018 Bentayga vehicles. When reverse gear has been selected, the rearview camera display may be obstructed or may not be fully visible within two seconds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rearview Mirrors."
Risk: If the full camera view is obstructed or delayed and the driver does not check their surroundings before backing up, there may be an increased risk of a crash.
Fix: Bentley will notify owners, and dealers will reprogram the software in the infotainment system, free of charge. The recall began October 19, 2018. Owners may contact Bentley customer service at 1-800-777-6923. Bentley's number for this recall is RE 18/11.
SEAT BELTS:REAR/OTHER
Campaign #19V033000 · Jan 15, 2019
Issue: Bentley Motors, Inc. (Bentley) is recalling certain 2012-2018 Bentley Mulsanne vehicles. In the event of a crash, the rear seat belt anchor may detach from the vehicle. As such, these vehicles fail to comply to Federal Motor Vehicle Safety Standard (FMVSS) number 210, "Seat Belt Assembly Anchorages."
Risk: In the event of a crash, if the rear seat belt buckle detaches, the seat occupant would have an increased risk of injury.
Fix: Bentley will notify owners, and dealers will improve the strength of the rear seat belt mounting by adding an additional reinforcement panel to the body structure, free of charge. The recall began March 7, 2019. Owners may contact Bentley Customer Service at 1-800-777-6923. Bentley's number for this recall is RE 19/01.
Critical for safety and preventing major damage
Replace engine oil and oil filter. Modern synthetic oil lasts 7,500–10,000 miles.
Estimated cost — typical U.S. ranges
Dealer
~$120–$160
Shop
~$85–$115
DIY
~$25–$55
Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.
Rotate tires to ensure even wear and extend tire life.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Often free at the shop where you bought the tires — worth asking before paying.
Inspect brake pads, rotors, and fluid. Replace pads if worn below minimum thickness.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.
Replace timing belt (if applicable). Critical failure can cause major engine damage.
Estimated cost — typical U.S. ranges
Dealer
~$935–$1175
Shop
~$655–$825
DIY
Pro only
On interference engines, a snapped belt destroys valves. Worth doing on schedule. Bundle water pump + tensioner — labor is already there.
Keeps your vehicle running smoothly and efficiently
Replace the engine air filter to maintain fuel efficiency and engine performance.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
5-minute job on most cars; the airbox lid usually has clips, no tools needed.
Flush and replace engine coolant to prevent overheating and corrosion.
Estimated cost — typical U.S. ranges
Dealer
~$285–$330
Shop
~$200–$235
DIY
~$25–$60
Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.
Replace transmission fluid to keep shifts smooth and prevent wear.
Estimated cost — typical U.S. ranges
Dealer
~$330–$500
Shop
~$235–$355
DIY
~$60–$180
Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.
Replace spark plugs for optimal combustion, fuel economy, and performance.
Estimated cost — typical U.S. ranges
Dealer
~$285–$390
Shop
~$200–$275
DIY
~$25–$100
Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.
Inspect and replace the serpentine belt to avoid unexpected breakdowns.
Estimated cost — typical U.S. ranges
Dealer
~$195–$235
Shop
~$135–$165
DIY
~$20–$50
DIY-friendly if you can reach the tensioner. Inspect for cracks rather than swap on a strict mileage interval.
Extends the life of your vehicle and improves comfort
Replace the cabin air filter for clean air inside the vehicle.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.
Test battery health and clean terminals. Average battery life is 3–5 years.
Estimated cost — typical U.S. ranges
Dealer
~$225–$390
Shop
~$160–$280
DIY
~$130–$250
Most auto-parts stores test and install batteries free with purchase. Skip the dealer markup.
Check and replace power steering fluid to maintain steering responsiveness.
Estimated cost — typical U.S. ranges
Dealer
~$185–$220
Shop
~$130–$155
DIY
~$15–$40
Most cars built after ~2012 use electric power steering and have no fluid to service.
What drivers and federal regulators have officially reported about the 2018 Bentley Mulsanne.
No common issues reported to NHTSA for the 2018 Bentley Mulsanne. That doesn't mean nothing can go wrong — just that the federal complaint database doesn't flag a pattern.
Issues on other model years
Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 31, 2026.
We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.
Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.
How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.
This maintenance schedule for the 2018 Bentley Mulsanne reflects general industry intervals for modern vehicles. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.