Common Problems with the
2003–2007 Maserati Quattroporte (M139)

We've identified 2 known issues that can affect the 2003–2007 Maserati Quattroporte (M139). 2 of these are serious faults that could be expensive to repair.

Known Issues

Serious

Moderate

Minor

The 2003–2007 period has 1 more issue than the Maserati Quattroporte (M139) average across all year periods.

All Known Issues

Cam Variator Failure (Cold Start Rattle)

SeriousEngine

A notorious issue on the 4.2 and early 4.7 V8 engines. The check valves fail, allowing oil to drain from the variators. If left, it can lead to engine timing issues.

Most affected: 4.2 V8 and early 4.7 V8

Estimated cost: £3,000–£5,000Affects: 2003–2010Often appears around: 30k-60k miles

Typical symptoms

•Brief rattling/ticking noise on cold start
•Check engine light with timing-related codes

What to inspect before you buy

✓Cold start the car and listen intently
✓Ask for documentation that the variator modification has been performed

DuoSelect Clutch Wear

SeriousGearbox & Transmission

The robotized manual gearbox (DuoSelect) is hard on its clutch, especially in city traffic or when reversing up hills. A replacement is a major expense.

Most affected: DuoSelect transmission models

Estimated cost: £2,500–£4,000Affects: 2003–2007Often appears around: 15k-30k miles

Typical symptoms

•Clutch slip
•Slow/jerky gear changes
•Car dropping into neutral unexpectedly

What to inspect before you buy

✓Get a clutch wear readout from a Maserati diagnostic tool
✓Feel for smoothness when pulling away from a standstill

Buying Tips for the 2003 Maserati Quattroporte (M139)

✓Avoid early "DuoSelect" (robotized manual) cars unless you specifically want that experience; they eat clutches
✓Listen for a 2-3 second "rattle" on a cold start; this indicates cam variator failure
✓Check for sticky interior buttons, which can cost thousands to professionally refinish
✓The ZF automatic (2007+) is significantly more reliable and cheaper to run than the DuoSelect

2008–2010 Maserati Quattroporte (M139)