2004 Alfa Romeo 166 3.0L Petrol · WG54 KTO
2004 Alfa Romeo 166 (3.0L, petrol). First registered 29 Nov 2004. Recorded mileage 54,790 miles. MOT valid until 19 Aug 2027.
- Make & Model
- ALFA ROMEO 166
- Year / Origin
- 2004 · Exeter
- Safety Recall
- Unknown
- MOT Status
- Valid until 19 Aug 2027
- Road Tax
- —
- Recorded Mileage
- 54,790 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 3.0L
- Reliability Guide
- Common Faults
Thinking of buying this vehicle? Free MOT and tax checks do not cover legal ownership. If outstanding finance exists, finance companies have legal right to repossess without compensation.
WG54 KTO Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 21/08/2026
- 54,790 miles recorded at latest MOT
- 2 historical MOT failures
- 5 defects noted at the latest MOT
- Recurring bodywork & corrosion items (12 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
WG54 KTO MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
5 MOT tests are recorded for this 2004 Alfa Romeo 166 (WG54 KTO) between June 2024 and August 2026.
The record contains 3 passes and 2 failures.
The most recent test on 21 August 2026 was a pass, although the earlier record includes 2 failures that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Bodywork (12 issues), Brakes (7 issues), Lighting (7 issues), Exhaust & Emissions (3 issues), Suspension (3 issues). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 21 advisory notices are recorded. Advisories flag items that passed but may need attention before the next test; they are not evidence of how well the vehicle has been serviced.
Recorded failure items include: “Nearside Rear Exhaust has a major leak of exhaust gases (6.1.2 (a))”; “Nearside Front Inner Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt ”; “Rear Exhaust system insecure (6.1.2 (a))”.
WG54 KTO Mileage History
- 08/06/202450,501 mi
- 09/05/202550,953 mi+452 mi
- 14/05/202550,953 mi
- 27/05/202654,777 mi+3,824 mi
- 21/08/202654,790 mi+13 mi
Average of roughly 1,948 miles per year across 5 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
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Known faults for Alfa Romeo Alfa Romeo 166
Our database tracks 3 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Average
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
Common Problems: ALFA ROMEO 166
Known issues reported by owners and MOT testers.
- V6 Water Pump Plastic Impeller Failure and Overheating(Serious)
The factory water pump on the 24V Busso V6 engines (2.5, 3.0, and 3.2) features a composite plastic impeller. Over time and thermal cycles, the plastic becomes brittle, developing hairline cracks until it spins loosely on the metal drive shaft. Coolant circulation ceases, causing rapid engine overheating, blown head gaskets, or warped aluminium heads. Specialists fit metal-impeller pumps with cambelt services.
- Integrated Control System (ICS) and Heater Matrix Leaks(Moderate)
The dashboard centre console contains the Integrated Control System (ICS) screen governing climate, audio, and trip functions. Directly above the main electrical modules sits the cabin heater matrix. Ageing plastic matrix end tanks crack, leaking hot ethylene glycol coolant directly into the wiring looms and ECUs. This leads to flickering ICS displays, battery drain, and screen locking if code cards are missing.
- Front Upper and Lower Suspension Wishbone Bush Wear(Moderate)
The heavy executive saloon chassis and front-wheel drive place high loads on the double-wishbone front suspension. In the UK, road salt and potholed tarmac deteriorate the upper wishbone rubber bushes and lower arm rear compliance bushes. This generates loud squeaking over road bumps, steering vagueness, and rapid scrub on the inside shoulders of front tyres.
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ALFA ROMEO 166 Model Intelligence & Reliability
Verified MOT failure trends, buying advice, and technical directory specifications.
Owner-reported defects, recurring MOT failure points, and estimated repair costs.
Browse production generations, registration statistics, and trim variants.
Historical MOT pass rates and DVLA records for 2004 model year cars.
- V6 Water Pump Plastic Impeller Failure and OverheatingSerious
The factory water pump on the 24V Busso V6 engines (2.5, 3.0, and 3.2) features a composite plastic impeller. Over time and thermal cycles, the plastic becomes brittle, developing hairline cracks until it spins loosely on the metal drive shaft. Coolant circulation ceases, causing rapid engine overheating, blown head gaskets, or warped aluminium heads. Specialists fit metal-impeller pumps with cambelt services.
- Integrated Control System (ICS) and Heater Matrix LeaksModerate
The dashboard centre console contains the Integrated Control System (ICS) screen governing climate, audio, and trip functions. Directly above the main electrical modules sits the cabin heater matrix. Ageing plastic matrix end tanks crack, leaking hot ethylene glycol coolant directly into the wiring looms and ECUs. This leads to flickering ICS displays, battery drain, and screen locking if code cards are missing.
- Front Upper and Lower Suspension Wishbone Bush WearModerate
The heavy executive saloon chassis and front-wheel drive place high loads on the double-wishbone front suspension. In the UK, road salt and potholed tarmac deteriorate the upper wishbone rubber bushes and lower arm rear compliance bushes. This generates loud squeaking over road bumps, steering vagueness, and rapid scrub on the inside shoulders of front tyres.
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