IsItAGoodCar
Reliability Guide

Common Problems with the
2010 Alfa Romeo GT

We've identified 3 known issues that can affect the 2010 Alfa Romeo GT. 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
1
Moderate
0
Minor

All Known Issues

Twin Spark and JTS Cambelt Tensioner Failure

SeriousEngine

The 1.8 Twin Spark and 2.0 JTS four-cylinder petrol engines utilise a toothed cambelt with a composite plastic tensioner pulley. Original Alfa Romeo schedules specified a 72,000-mile interval, but recurring tensioner bearing seizure and belt snapping forced UK specialists to revise the limit to 36,000 miles or 3 years. If the belt fails, valves collide with pistons, destroying the cylinder head.

Est. Repair Cost: £450–£750 (preventative replacement) / £1,500–£2,800 (valvetrain rebuild)
Warning Signs:

Dry bearing whine or scratching noise from the timing belt cover area at idle, Service history exceeds 36,000 miles or 36 months since last timing belt replacement, Sudden engine cut-out during driving followed by rapid starter cranking with no compression

What to Inspect:
  • Demand written invoices confirming cambelt, tensioner, idlers, and water pump replacement
  • Check the date and mileage of the last belt service against the strict 3-year limit
  • Listen for tensioner bearing whine around the front of the cylinder head on cold startup
Verified by IsItAGoodCar Research TeamUpdated

Sill and Floorpan Structural Corrosion

SeriousBodywork & Rust

The GT features plastic sill body mouldings that trap damp mud, road grit, and winter salt against the steel inner and outer sills. Over time, moisture attacks the structural floor outriggers, jacking points, and rear sill ends from within. What appears as pristine paintwork on the upper panels can conceal crumbling, perforated steel underneath, resulting in expensive MOT structural failures.

Est. Repair Cost: £600–£1,600 (fabricating and welding new structural steel sills)
Warning Signs:

Crumbly or soft metal when prodding around the four designated jacking points, Rust bubbling or paint flaking along the lower seam beneath the plastic sill covers, Damp cabin footwell underlay caused by water spraying up through floorpan perforations, MOT failure certificates noting corrosion within 30cm of suspension or seatbelt mounts

What to Inspect:
  • Inspect the vehicle on a workshop ramp and probe the full length of the inner sills
  • Examine the front floorpan pans behind the front wheel arches for rust holes
  • Lift the spare wheel cover in the boot to inspect floorpan seams and corners
Verified by IsItAGoodCar Research TeamUpdated

Front Upper Wishbone Bush and Ball Joint Wear

ModerateSuspension & Chassis

The Alfa GT uses a high double-wishbone front suspension setup inherited from the 156. The upper wishbone rubber bushes and integrated ball joints endure heavy lateral loading and road grime from UK roads. The rubber bushes perish and dry out, generating loud creaks over speed bumps, clunks over broken tarmac, and rapid tyre scrub on the inner edges of the front tyres.

Est. Repair Cost: £220–£450 (per axle replacement with quality OEM or polybush components)
Warning Signs:

High-pitched rubber squeaking noise from front suspension over speed bumps, Dull clunking over potholed or broken road surfaces, Steering feels loose, vague, or wanders under moderate braking, Premature wear on the inner shoulders of both front tyres

What to Inspect:
  • Bounce the front wings vigorously by hand and listen for dry rubber squeaks
  • Turn steering to full lock and visually check the upper wishbone ball joint boots for splits
  • Check front tyre tread depth across the full profile using a tyre depth gauge
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2010 Alfa Romeo GT

  • On 1.9 JTDm diesel and 2.0 JTS petrol engines, insist on evidence of cambelt and water pump changes every 36,000 miles or 3 years.
  • Inspect upper and lower front suspension wishbones and anti-roll bar drop links for perished bushes and ball joint play.
  • Inspect inner and outer structural sills and floorpan jacking points on a ramp for hidden rust perforation beneath plastic side skirts.
  • On 3.2 Busso V6 models, verify whether a Q2 or Quaife mechanical limited-slip differential has been retrofitted to prevent factory differential casing failure.
  • Test both frameless electric windows to ensure they drop slightly when opening doors and seal firmly into the rubber seals upon closing.
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