1.0 & 1.2 PureTech Wet Belt — Which Cars Are Affected & When Did Stellantis Switch to Timing Chains?
A complete, fact-checked UK guide to the PureTech wet belt issue. Which cars carry the risk, what actually goes wrong, when Stellantis introduced the timing chain — and why the answer is more complicated than most articles suggest.
The Quick Answer
- 2012–2023 PureTech EB2 engines (Gen 1 & Gen 2) all use a wet timing belt and are affected
- From 2023, Stellantis introduced the Gen 3 EB2 engine with a timing chain — but the changeover is gradual, not a clean cutover
- Belt-driven engines are still being sold in brand-new 2024–2025 cars, particularly non-hybrid petrol variants
- Failure causes catastrophic engine damage — often with very little warning beforehand
- Stellantis extended the warranty on affected engines to up to 10 years / 175,000 km under certain conditions
What Is the PureTech Wet Belt Problem?
The 1.2 PureTech (internally coded EB2) was launched in 2012 and quickly became one of PSA's — and later Stellantis's — most widely used petrol engines. It was named "Engine of the Year" multiple times between 2015 and 2018. But behind the awards, a serious design flaw was causing real-world heartache for thousands of owners.
Unlike a traditional timing belt that runs dry, the PureTech timing belt runs inside the engine, submerged in engine oil. This "wet belt" design was meant to reduce friction, cut noise, and improve efficiency. In practice, the rubber proved highly sensitive to oil quality and fuel dilution — particularly on cars used mostly for short urban journeys where the engine rarely reaches full operating temperature.
Warning Signs to Watch For
- Low oil pressure warning light, especially at higher revs
- Engine management light (EML) switching on
- Rattling or ticking noises on cold start
- Loss of power, particularly above 3,500–4,000 rpm
- Higher than normal oil consumption
- Black or very dirty oil between changes
- Complete engine failure
What makes this particularly dangerous is that many engines fail before reaching the manufacturer's recommended replacement interval. Some show almost no symptoms until the moment of catastrophic failure.
Which Cars Have PureTech Wet Belt Engines?
The EB2 engine family was fitted across a huge range of Stellantis (formerly PSA) vehicles. If your car has a 1.0 or 1.2 PureTech petrol engine built between 2012 and late 2023, it almost certainly has a wet belt.
Peugeot
- 108 (1.0)
- 208
- 2008
- 308
- 3008
- 5008
Citroën
- C1 (1.0)
- C3
- C3 Aircross
- C4 / C4 Cactus
- C4 Picasso
- C5 Aircross
Vauxhall / Opel
- Corsa (F)
- Astra (K)
- Mokka / Mokka-e
- Crossland / Crossland X
- Grandland X
DS Automobiles
- DS3 / DS3 Crossback
- DS4
- DS7 Crossback
Others
- Jeep Avenger
- Toyota ProAce City
- Fiat models (newer)
This is not an exhaustive list — the EB2 family was fitted to many more models across Europe. If you're unsure whether your car is affected, contact us and we'll check for you.
When Did PureTech Switch to a Timing Chain?
This is where it gets more nuanced than most guides suggest. It is not simply a case of "2023 and newer = timing chain." The transition has been gradual and is still ongoing.
| Engine Generation | Timing System | Approx. Period | Risk Level |
|---|---|---|---|
| EB2 Gen 1 | Wet Belt (original) | 2012–2016 | High Risk |
| EB2 Gen 2 | Wet Belt (improved materials) | 2017–2023+ | Still Affected |
| EB2 Gen 3 (EB2LTDH2) | Timing Chain — outside oil circuit | 2023 onwards | Lower Risk |
To add to the confusion, Stellantis quietly dropped the "PureTech" name from its catalogues in late 2024 and rebranded the engine simply as "1.2 Turbo" or "1.2 Hybrid" depending on the model. This means a used car advert reading "1.2 Turbo" tells you nothing about whether it has a wet belt or a chain.
The Stellantis Warranty Extension
Following widespread failures, legal pressure, and a class-action lawsuit, Stellantis announced a significant warranty extension for owners of affected PureTech engines. Cover has been extended to 10 years or up to 175,000 km, subject to conditions.
Stellantis also launched a compensation platform for owners who paid for PureTech-related repairs between January 2022 and December 2024. If you've already funded a wet belt replacement or engine rebuild out of your own pocket, it's worth checking whether you're eligible for a refund.
Why You Shouldn't Wait for the Belt to Fail
Even if your car is within the official service interval, early preventative replacement is strongly advisable — especially for Gen 1 and Gen 2 engines.
- Failures happen before the interval: Many engines fail well before the 100,000 km or 6-year mark, particularly on cars used predominantly for short, cold-start urban journeys
- Fuel dilution accelerates wear: Short trips prevent the engine fully warming up, causing unburnt fuel to contaminate the oil — exactly the conditions that break down the belt material fastest
- Engine damage costs are severe: A failed wet belt can mean a blocked oil strainer, damaged VVT solenoids, turbo failure, and potentially a full engine rebuild — costs of £3,000 to £6,000+
- Little warning before it goes: Unlike a noisy dry belt, a degrading wet belt often sheds particles silently. By the time oil pressure warnings appear, internal damage may already be done
At TGPP Autocare we recommend replacing the PureTech wet belt at 60,000 miles or every 6 years, whichever comes first. For cars used mainly for short journeys, we'd advise doing it sooner.
PureTech Wet Belt Replacement in Stevenage
We carry out PureTech wet belt replacements regularly at our RAC Approved garage in Stevenage. We know this engine's failure points inside-out — and we do the job properly.
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