Engine failure due to a covered component under warranty.

Funqi

£11,500 will buy you another car and probably leave enough change for a holiday. There are garages around rebuilding these engines for around £2500.

Unfortunately your car has a Puretech engine. Just Google "Puretech engine" and you will see why mechanics and car dealers are screaming at people to avoid them. They suffer from 3 common faults.

1. The wet belt disintegrating. This contaminates the oil,  blocks the oil pick up tube and starves the engine of oil and causes low oil pressure. 

2. Wet belt failure. Due to the above going un-noticed, undiagnosed. 

3. Stuck/worn oil scraper piston rings. This causes the engine to consume excessive oil as it gets into the combustion chamber. It causes the engine to smoke and damages the catalytic converter. It can also make the spark plugs wet and cause a misfire.

Your car has exhibited 2 of these 3 symptoms. If your engine has suffered a total failure, I don't understand how a misfire can be detected if the engine has already been totally destroyed. Unless they are saying that they fixed the engine and got it running, then the hose clip fell onto the driveshaft and destroyed the engine?

muncey55

Just to clarify it was the clips that attach the hose to the body and not the clip that connects the hose to the bottle.

I don’t understand how a car can show a warning, be parked up and recovered to repair, then present as total engine failure. 

The two could be unrelated, I have no way of knowing

Funqi

How old is the car? Does it have a full service history and who has been servicing it?
You say it is still under warranty, is that from the manufacturer or from the dealer where you bought the car?

Yes, they could be unrelated and I would guess they must be.

It doesn't make any sense that they are saying that they have replaced the hose and the drive shaft. Then they discovered a misfire, so replaced the plugs. Then they discovered that the engine is totally destroyed and the cause was the clip from the hose falling onto the driveshaft.
If that was the case, then they would never have got the engine running to even discover the misfire.

It could be that this clip has damaged the driveshaft somehow and they have repaired it. Then when they have the engine running again, they have discovered a misfire and after investigating what has caused that, they have found it is a terminal problem. But you say that they have told you that the clip falling from the hose is what caused the total engine failure. That doesn't make sense. 

SiliconChip

Two peope have now asked how old the car is. the very first line of the OP says 

Vauxhall Mokka 2021 1.2 petrol

I'm not sure how much more spoon feeding is needed.

muncey55

They say the hose failing is the cause of the lack of coolant going to the engine. But as I say, AS SOON AS THE FAULT OCCURED the engine was stopped and the key not turned while in my possession. 

The car was 4 years old to the day when it arrived at the repair garage. 

And it was dealer sold extended warranty that ran from 29/09/24-29/09/25

facade

I've dusted off my crystal ball and through the mist I can see-

It is a 1.2 puretech.

There is no oil pressure, the garage noticed a "deterioration" in the wet belt. (Guess where the missing particles of belt are- blocking the oil filter and pick up)

I'd suggest all the problems started here.

Running with low oil pressure probably overheated the engine- I doubt if Vauxhall believe in fitting a simple temperature gauge, and rely on a red light to tell you the engine is about to seize with just enough time to get your foot on the clutch. The overheat possibly is responsible for the feeble plastic pipe clips breaking and dropping the hose into the works, venting the water won't have helped with the overheating.

Wet plugs- water? head gasket gone. oil? probably rings seized or lost all tension through the heat.

The engine is scrap because it has been run without oil and everything has excessive wear.

The driveshaft is likely "destroyed" because one of the rubber gaiters has been damaged by something wrapped round it.

Obviously, I don't know I can only guess, the same as everyone else, but I'd bet £1 that I'm not far off.

I think everything is because of premature failure of the wet belt, that Stellantis should cover through gritted teeth under the wet belt warranty extension that we keep hearing about.

Unfortunately I don't think that the first garage has handled it very well and have identified symptoms but not the disease..

What to do now?

Either buy a car to run around in and dig in for a very long battle with Stellantis (which is going to need money spending on proper Engineers reports and Court action), or find a smaller garage that knows what they are doing and can replace the engine with one that runs* and has a new wet belt for £2000 to £3000 or so, then trade it in against something that isn't made by Stellantis (or Ford)- try a petrol Mazda, a Renault-Nissan etc.

*With a second hand puretech, you can't expect any more than it runs. A lot of them have been run until the oil light comes on and quickly had a new wet belt, or could be on the verge of failure.

Mildly_Miffed

If the belt has deteriorated on a 4yo <50k engine, it can only be because of sorely neglected previous maintenance - overlong intervals, wrong oil... And there's not a chance of any goodwill in that instance.

Funqi

This portal exists to pay compensation to help cover costs of owners of these engines who have suffered failures.
https://www.stellantis.com/en/contacts/puretech-compensation-platform

You have to provide documentation to prove that you have maintained it in accordance with manufacturer's specifications on order to make a claim. The only leeway is if your service was up to 1800 miles/3 months late. The very fact that this portal exists, shows that Puretech engines are expected have these failures regardless of how well you service it.

Mildly_Miffed

Funqi said:

This portal exists to pay compensation to help cover costs of owners of these engines who have suffered failures.
https://www.stellantis.com/en/contacts/puretech-compensation-platform

You have to provide documentation to prove that you have maintained it in accordance with manufacturer's specifications on order to make a claim. The only leeway is if your service was up to 1800 miles/3 months late. The very fact that this portal exists, shows that Puretech engines are expected have these failures regardless of how well you service it.

Well, that rather depends, doesn't it?

If there's only a very tiny number of successful claims, because of the servicing requirement...

muncey55

Did I mention I have only owned the car for 18 months