Front upper wishbones
usually 120,000–280,000 km · Medium risk
Signs: Knocks, vague steering, uneven tyre wear
Fix: Replace wishbones (as a pair)
€250–600
Common faults, service intervals and costs
Alfa Romeo 166
1998–2007
2
engines covered
9
known faults
2
official recalls
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The Alfa Romeo 166 was built from 1998 to 2007.
For this generation we cover 2 engines and 9 known faults, each with the mileage range where it usually appears.
The most expensive known risk is Oil consumption (valve guides / rings): it usually appears at 100,000–200,000 km and costs €600–1,800 to fix.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| 1.6 / 1.8 / 2.0 Twin Spark 16v (Alfa Romeo) | Petrol | Belt · 60,000 km / every 36 mo | 10W-40 / 5W-40 · Fiat 9.55535-G2 · ~4.4 L · every 15,000 km |
| 2.4 JTD / JTDm (5-cyl) | Diesel | Belt · 120,000 km | 5W-40 · Fiat 9.55535-N2 · ~6.2 L · every 15,000 km |
Faults typical of this model
Electrics (window regulators, door locks)
usually 80,000–200,000 km · Wear part
Signs: Windows or locks fail
Fix: Replace parts
€100–300
Faults by engine
1.6 / 1.8 / 2.0 Twin Spark 16v (Alfa Romeo)
Timing belt & variator (short interval)
usually 50,000–70,000 km · High risk
Signs: Belt failure destroys the engine — change belt + variator every 60,000 km / 3 years
Fix: Replace belt kit, tensioners and variator
€400–900
Oil consumption (valve guides / rings)
usually 100,000–200,000 km · Medium risk
Signs: Blue smoke, topping up
Fix: Check oil level often; head repair
€600–1,800
Ignition coils / plugs (8 plugs)
usually 120,000–240,000 km · Wear part
Signs: Misfire
Fix: Replace coils and plugs
€120–350
2.4 JTD / JTDm (5-cyl)
Swirl flaps / intake manifold
usually 100,000–180,000 km · High risk
Signs: Flap failure, engine light
Fix: Replace manifold
€400–900
EGR / DPF
usually 120,000–200,000 km · Medium risk
Signs: Limp mode
Fix: Clean or replace
€300–1,500
Gearboxes
Manual
Clutch wear
usually 120,000–200,000 km · Medium risk
Signs: Slipping, high bite point
Fix: Replace clutch kit
€500–900
Automatic (torque converter)
Torque converter / valve body
usually 150,000–250,000 km · Wear part
Signs: Delayed or harsh shifts
Fix: Fluid service, repair
€300–2,500
Scheduled service
Intervals and typical prices for the 1.6 / 1.8 / 2.0 Twin Spark 16v (Alfa Romeo) engine. Other engines differ in oil, timing drive and some filters; the app gives the exact plan.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Timing belt kit + water pumpEngine | every 60,000 km or every 36 months | €450–900 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Manual gearbox oilTransmission | every 150,000 km | €60–130 |
| Front brake padsBrakes | usually at 30,000–60,000 km | €60–150 |
| Front brake discs + padsBrakes | usually at 60,000–120,000 km | €150–320 |
| Rear brake padsBrakes | usually at 50,000–90,000 km | €50–130 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
Official recalls
Recalls the manufacturer published in the United Kingdom for this model (2). The same recalls usually apply across Europe. Ask an authorised dealer to check by VIN whether your car is affected and whether the work has been done.
- Fuel system Possible fuel leak23/05/2005 · R/2005/030
- Steering Power assisted steering concern30/04/2001 · R/2001/058
Common questions
Does the Alfa Romeo 166 have a timing chain or a timing belt?
1.6 / 1.8 / 2.0 Twin Spark 16v (Alfa Romeo): belt · 60,000 km / every 36 mo; 2.4 JTD / JTDm (5-cyl): belt · 120,000 km.
What are the known problems with the Alfa Romeo 166?
The faults with the highest risk: timing belt & variator (short interval) (50,000–70,000 km, €400–900); swirl flaps / intake manifold (100,000–180,000 km, €400–900); oil consumption (valve guides / rings) (100,000–200,000 km, €600–1,800); EGR / DPF (120,000–200,000 km, €300–1,500). The full list by engine is on this page.
What should you check when buying a used Alfa Romeo 166?
Before you buy, ask an authorised dealer to check by VIN that the recalls have been done (2 have been published for this model). If the engine has a timing belt, ask for the invoice for its replacement: with no proof, assume it has not been done. On the test drive, watch for these signs: belt failure destroys the engine — change belt + variator every 60,000 km / 3 years; flap failure, engine light. The full checklist is in the guide to buying a used car.
Other generations
Alfa Romeo 147 2000–2010Alfa Romeo 156 1997–2007Alfa Romeo 159 2005–2011
Models with the same engines
These models share engines with this car, so they share some of its faults too.
Alfa Romeo Brera / Spider (939) 2005–2010Fiat Croma II 2005–2011Alfa Romeo GT 2003–2010
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Engine versions: EEA, monitoring of CO₂ emissions from new passenger cars (CC BY 4.0, DG CLIMA). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026