IsItAGoodCar
Reliability Guide

Common Problems with the
2018 Aston Martin DB11

The 2018 model year broadened the DB11's appeal with the introduction of an AMG-sourced 4.0-litre twin-turbo V8. Lighter over the nose and slightly more agile, the V8 model quickly became the preferred choice for many drivers.

What changed for 2018

  • •Introduction of the 4.0-litre twin-turbo V8 engine option.
  • •Launch of the DB11 Volante (convertible), available exclusively with the V8 engine.

Common MOT watch-outs

  • !Exhaust valve actuator failures leading to emissions warnings or 'limp mode'.
  • !Suspension alignment issues causing uneven tyre wear.
3
Known Issues
0
Serious
3
Moderate
0
Minor

All Known Issues

Battery-voltage and module warning faults

ModerateElectrics & Electronics

A weak 12V battery can trigger a "Christmas tree" of dashboard warnings.

Est. Repair Cost: £250–£600
Warning Signs:

Multiple warning lights on start-up, Slow cranking

What to Inspect:
  • Check battery age and conditioner use.
Verified by IsItAGoodCar Research Team

Coolant leaks from thermostat or water-pump area

ModerateCooling System

Both the V8 and V12 can develop leaks that become serious if ignored.

Est. Repair Cost: £400–£1,500
Warning Signs:

Sweet smell after a drive, Dropping coolant level

What to Inspect:
  • Inspect coolant level cold.
  • Look for staining near hoses.
Verified by IsItAGoodCar Research Team

Exhaust Valve Actuator Failure

ModerateEngine

The electronic exhaust valve actuators on the DB11 can fail, causing the car to go into a reduced power "limp" mode and preventing the engine from revving freely.

Est. Repair Cost: £1,000–£2,500
Warning Signs:

Car won't rev above 3000 RPM, Limp mode activation, Exhaust note changes or becomes muted, Check Engine Light

What to Inspect:
  • Test the car under hard acceleration
  • Listen for the exhaust note to change through the rev range
  • Scan for exhaust valve fault codes
Verified by IsItAGoodCar Research Team

Buying Tips for 2018 Aston Martin DB11

  • ✓On V8 models, listen for the exhaust note changing smoothly; actuator failures prevent the engine from revving freely.
  • ✓Test the flush door handles repeatedly to ensure smooth and consistent operation.
20172019–2023
Check a 2018 Aston Martin DB11 by Registration