IsItAGoodCar
Reliability Guide

Common Problems with the
2004 Aston Martin DB9

The 2004 launch of the DB9 heralded a new era for Aston Martin, debuting the bonded aluminium VH architecture and a glorious 5.9-litre V12 engine. Early cars established the template for the modern Aston Martin grand tourer but require dedicated upkeep.

What changed for 2004

  • •Introduction of the VH (Vertical/Horizontal) platform and striking Ian Callum/Henrik Fisker design.
  • •Debuted with the naturally aspirated V12 and a ZF six-speed automatic or rare manual gearbox.

Common MOT watch-outs

  • !Deterioration of suspension bushes and ball joints due to the car's weight.
  • !Emissions failures caused by aging coil packs leading to misfires.
3
Known Issues
0
Serious
2
Moderate
1
Minor

All Known Issues

V12 Timing Cover Oil Leaks

ModerateEngine

Like the V8, the V12 is prone to weeping oil from the front cover. On the V12, this often requires the entire front end of the car to be dismantled.

Est. Repair Cost: £3,000–£5,000
Warning Signs:

Burning oil smell, Oil residue on the front subframe, Contaminated auxiliary belts

What to Inspect:
  • Look for oil weeping behind the pulleys at the front of the engine.
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V12 Coil Pack & Spark Plug Failure

ModerateEngine

Heat soak in the V12 "valley" kills coil packs. Replacement requires removing both intake manifolds, making it a very expensive labor-heavy job.

Est. Repair Cost: £2,000–£3,000
Warning Signs:

Rough idling, Misfire under load, Check Engine light (CEL)

What to Inspect:
  • Check if all 12 coils and plugs were replaced recently.
  • Listen for a smooth, even idle when fully warm.
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Door Handle Pivot Pin Failure

MinorBodywork & Rust

The DB9 uses the same flush handles as the Vantage, subject to the same pivot pin wear and sagging.

Est. Repair Cost: £400–£800
Warning Signs:

Sagging handle, Handle doesn't sit flush, Loose feeling when pulled

What to Inspect:
  • Wiggle the handle when closed; there should be no play.
Verified by IsItAGoodCar Research Team

Buying Tips for 2004 Aston Martin DB9

  • ✓Listen carefully for a smooth idle; misfires mean a costly coil pack replacement.
  • ✓Check the front timing cover area meticulously for any signs of oil leaks.
2005–2012
Check a 2004 Aston Martin DB9 by Registration