IsItAGoodCar
Reliability Guide

Common Problems with the
2009 Aston Martin One-77

The 2009 debut of the One-77 revealed Aston Martin's most ambitious project to date: an ultra-exclusive hypercar featuring a full carbon-fibre monocoque and a 7.3-litre naturally aspirated V12. Its launch captivated the automotive world with its blend of bespoke craftsmanship and extreme engineering.

What changed for 2009

  • •Initial unveil and commencement of the highly limited 77-unit production run.
  • •Showcased the incredible 750bhp 7.3-litre V12, one of the most powerful naturally aspirated engines ever made.

Common MOT watch-outs

  • !Given its hypercar status, cars rarely fail MOTs due to meticulous specialist care, but emissions systems must be closely monitored.
  • !Deterioration of tyres due to age rather than mileage.
3
Known Issues
2
Serious
1
Moderate
0
Minor

All Known Issues

Carbon Fibre Monocoque and Body Panel Damage

SeriousBodywork & Rust

The One-77 is engineered around an ultra-rigid 180kg carbon-fibre monocoque tub clad in bespoke, hand-beaten aluminium exterior panels. Each front wing was hand-formed from a single sheet of aluminium over three weeks. Any structural collision or kerbing impact can compromise the integrity of the carbon tub or buckle the irreplaceable hand-crafted panels. Because no off-the-shelf replacement body panels exist for this 77-unit hypercar, repairs necessitate bespoke reconstruction by Aston Martin's Works department.

Est. Repair Cost: £25,000–£120,000+
Warning Signs:

Hairline fracture lines or delamination rings visible within exposed interior carbon-fibre tub weave, Irregular shut lines and panel gaps around the massive hand-formed aluminium front wings, Deep scuffs or fractures on the exposed carbon-fibre front splitter and massive rear diffuser, Distortion or micro-blistering in the bespoke multi-coat paintwork across aluminium-to-carbon joins

What to Inspect:
  • Commission a full ultrasound or non-destructive composite inspection of the central carbon monocoque
  • Inspect the complex aluminium front wings and rear haunches for signs of filler or respray work
  • Examine the underside of the carbon-fibre front splitter and rear diffuser for grounding strikes
  • Verify all chassis tub and subframe mounting points with Aston Martin Works or Q Division records
Verified by IsItAGoodCar Research TeamUpdated

Graziano Automated Manual Gearbox Driveline Shunt and Clutch Wear

SeriousGearbox & Transmission

To handle 750bhp without the bulk of a heavy dual-clutch unit, the One-77 employs a rear-transaxle Graziano 6-speed automated manual gearbox with a twin-plate semi-race clutch. Driven through a carbon propshaft and magnesium torque tube, the single-clutch electro-hydraulic system is notoriously unforgiving in stop-start urban driving and low-speed parking manoeuvres. Slipping the clutch against the locking differential rapidly glazes the friction plates, causing severe driveline judder, jerky take-off, and premature clutch wear.

Est. Repair Cost: £10,000–£28,000
Warning Signs:

Severe judder, stuttering, and driveline shunt when pulling away from rest in first gear, Clutch engagement pauses and releases before abruptly biting during low-speed parking manoeuvres, Excessive head-nodding delay and mechanical clunking during upshifts between first and second gears, Transmission fault warnings or clutch temperature overheat alerts displayed on the dashboard

What to Inspect:
  • Test low-speed getaway and tight three-point turns to assess clutch bite smoothness and differential binding
  • Interrogate the transmission control module using Aston Martin diagnostics to check clutch wear percentage
  • Verify clutch bite-point adaptations and hydraulic actuator pressure accumulator integrity
  • Inspect transaxle casing and magnesium torque tube for fluid weeping or evidence of excessive thermal stress
Verified by IsItAGoodCar Research TeamUpdated

V12 Engine Management and Sensor Faults

ModerateEngine

The 7.3-litre dry-sumped Cosworth-engineered V12 produces 750bhp at 7,500rpm with a high 10.9:1 compression ratio, managed by specialized Bosch engine electronics and dry-sump scavenge monitoring. Because these ultra-rare hypercars spend prolonged periods in static collector storage, fuel degradation, moisture accumulation in the intake tract, and mass airflow sensor drift commonly occur. Sensor irregularities cause intermittent cylinder misfires, uneven hunting idle, and engine management fault codes requiring factory-level AMDS diagnostic rigs.

Est. Repair Cost: £3,000–£12,000
Warning Signs:

Intermittent Check Engine warning lamp illuminated on the graphite instrument binnacle, Uneven, hunting idle or hesitation during initial throttle tip-in following long storage spells, Engine management drops into safety limp-home mode with restricted rev limit, Misfires and unburnt fuel smells from the high-performance quad exhaust tailpipes

What to Inspect:
  • Connect official Aston Martin AMDS diagnostic tooling to check live sensor data and misfire counters
  • Check that fuel system flushing and fresh high-octane petrol have been maintained annually
  • Inspect dry-sump oil tank level and scavenge pump lines following the precise factory warm-up procedure
  • Review Aston Martin Works service history for ignition coil pack replacements and ECU firmware updates
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2009 Aston Martin One-77

  • Only consider purchasing from an authorised Aston Martin specialist or the factory's Q division.
  • Ensure the carbon-fibre monocoque has been rigorously inspected for any signs of stress or impact.
2010–2011
Check a 2009 Aston Martin One-77 by Registration