IsItAGoodCar

Common Problems with the
2014–2016 Bentley Mulsanne

We've identified 3 known issues that can affect the 2014–2016 Bentley Mulsanne. 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
1
Moderate
0
Minor

The 2014–2016 period has 2 more issues than the Bentley Mulsanne average across all year periods.

All Known Issues

Power Steering Pump Failure

SeriousSteering

The hydraulic steering pump can fail, leading to heavy steering or noisy operation.

Most affected: 6.75 V8

Estimated cost: £1,800–£3,000Affects: 2014–2016Often appears around: 30k–50k miles

Typical symptoms

  • •Stiff steering
  • •Whining/Groaning noise when turning
  • •Fluid leaks

What to inspect before you buy

  • ✓Listen for noise when turning the wheel from lock to lock while stationary

6.75L V8 Turbo Oil Feed Line Leaks

SeriousEngine

The legendary 6.75-litre V8 uses turbo oil feed lines that can develop leaks as they age, leading to oil consumption, potential turbo damage, and in severe cases engine bay fires if oil contacts hot exhaust components.

Most affected: 6.75 V8

Estimated cost: £1,500–£4,000Affects: 2010–2020Often appears around: 40k–70k miles

Typical symptoms

  • •Oil smell after driving
  • •Visible oil residue around turbo area
  • •Oil pressure warnings
  • •Smoke from engine bay

What to inspect before you buy

  • ✓Inspect turbo oil feed and return lines for seepage
  • ✓Check for oil residue in the engine bay
  • ✓Ask for history of turbo-related work

Coolant Expansion Tank Leaks

ModerateCooling System

The plastic expansion tanks can crack or the seals can fail, leading to slow coolant loss.

Most affected: All variants

Estimated cost: £400–£800Affects: 2010–2020Often appears around: 40k–60k miles

Typical symptoms

  • •Low coolant warning
  • •Sweet smell of antifreeze
  • •White residue on the tank

What to inspect before you buy

  • ✓Visually inspect the expansion tank for hairline cracks or pink/orange residue

Buying Tips for the 2014 Bentley Mulsanne

  • ✓Listen for any "whining" from the power steering pump.
  • ✓Check for signs of coolant leaks around the front of the engine.
  • ✓Ensure the rear picnic tables and entertainment screens operate perfectly.
  • ✓Verify that all original accessories (umbrellas, vanity kits) are present.
2010–2013 Bentley Mulsanne2017–2020 Bentley Mulsanne

Browse 2014–2016 Bentley Mulsanne in our Directory

View MOT history, registration data, and reliability scores for 2014–2016 Bentley Mulsanne vehicles.

View 2014–2016 Directory

Other Bentley Mulsanne Year Periods

2010–20132014–20162017–2020

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