What goes wrong, what it costs, and what to check before you buy a used Alfa Romeo 159.
The Alfa Romeo 159 occupies a niche position on the UK market.
We track 15 known issues across the Alfa Romeo 159 range, including 2 rated as safety-critical. Knowing which variants and configurations to approach with caution can save you from expensive surprises after purchase.
Found a Alfa Romeo 159? Enter the reg to see which of our 15 known issues apply to that exact car, plus full MOT history and mileage checks.
159 (2005–2011) — Petrol options included the 1.75 TBi, 2.2 JTS, 1.8 MPI, with 1.9 JTDm, 2.4 JTDm on the diesel side. Our database flags 15 known issues on this generation, 2 of which are rated as safety-critical. The most significant concern is Swirl flap failure (£200–£400 to address).
The intake manifold swirl flaps on JTDm diesel engines can fracture and be ingested into the engine, causing catastrophic damage. The plastic flap arms become brittle with heat cycling and can break away from the manifold.
If a swirl flap fragment enters a cylinder, it can cause catastrophic piston, valve, and bore damage requiring engine replacement. Preventive removal or blanking is the recommended approach.
Listen for whistling or hissing from the intake area with the engine running, which can indicate split hoses or leaking gaskets. Check for rough idle and hesitation under acceleration — both symptoms of intake air leaks.
The 1.9 and 2.4 JTDm diesel engines require a timing belt change every 60,000 miles or 4 years, whichever comes first. The water pump and tensioners should be replaced at the same time. This is an interference engine; belt failure causes catastrophic valve and piston damage.
Belt failure destroys the engine. Replacement belt, tensioner, and water pump is the standard service.
Ask when the timing belt was last replaced and at what mileage. If the car is approaching or past the manufacturer's recommended interval without documented replacement, factor the cost into your offer. A snapped belt on an interference engine causes catastrophic damage.
The 159 is prone to steering rack failure. This is a common and expensive issue, often requiring a complete rack replacement rather than a repair.
A failing rack worsens progressively. Complete failure results in very heavy steering. Rack replacement is labour-intensive due to the 159's engine bay layout.
During the test drive, check the steering for excessive play, vibration or pulling to one side. Listen for groaning or whining when turning the wheel at low speed. Power steering fluid level and condition should be checked on hydraulic systems.
The 159 is a heavy car, which places high stress on the front coil springs. Springs are known to fracture, particularly at the lower coil. Upgraded aftermarket springs are available and recommended when replacing.
A fractured spring is an MOT failure and affects handling and braking stability. A separated spring section can damage the tyre or brake lines.
Listen for knocking, clunking or rattling over bumps during the test drive. Inspect the underside for corroded or cracked suspension components. Check the MOT history for suspension-related advisories, which often predict future failures.
The M32 manual gearbox, fitted to the 1.9 JTDm diesel and 1.8 MPI petrol models, is prone to bearing failure. This is a well-documented weakness of the M32 unit across multiple manufacturers that used it.
Bearing failure worsens progressively and eventually results in gear engagement failure. Repair requires gearbox removal and a bearing overhaul or replacement unit.
Test the automatic gearbox extensively in slow traffic, car parks and on hill starts. Feel for any juddering, hesitation or clunking during gear changes. Try repeated low-speed manoeuvres as this is where problems are most apparent.
For the full breakdown of all 15 tracked issues with repair costs, see the Alfa Romeo 159 common problems page.
The Alfa Romeo 159 has some well-documented weak points, including 2 safety-critical issues that demand careful checking. The right example, properly maintained, can still be a sound purchase — but cutting corners on the pre-purchase inspection is not advisable.
Before committing, check the car's full MOT history, verify the service record is complete, and if possible arrange a specialist inspection. Enter any registration into our free report to see the complete picture.
Get Car Wise maintains a database of known mechanical issues for every popular car on UK roads, tracking the faults that owners, specialists and DVSA data reveal.
When you run a report on a specific Alfa Romeo 159, we cross-reference the exact variant, engine and age against our database of 15 known issues. Combined with full MOT history analysis, mileage verification and DVLA data, you get a complete picture before viewing.
Enter the registration for MOT history, mileage verification, known faults for that exact variant, and a Get Car Wise Score.
This guide was compiled from independent expert reviews, DVSA MOT data, specialist workshops and our own database of 15 known Alfa Romeo 159 issues. We are not affiliated with any source listed.