Apologies if this is a duplicate of some past post -I have searched but can't find much reference this problem.

I wondered if anyone else has had the same problem.

Driving home from work, I had a sudden drop in power, with the car going into "limp home" mode. Had it connected up to VCDS, with a turbo over boost fault showing. The mechanic thought the turbo's variable veins were gunked up with carbon deposits, so recommended SP Diagnostics product called Revive. After shelling out £47 for a bottle from CES UK, and an hours labour charge, the car only showed a moderate improvement, but still in "llimp home" mode. VCDS now shows turbo pressure under boost. The mechanic now states the turbo may have "gone", however I am not convinced.

I've spoken to a company called "Midland Turbo" who state that this is a common problem with VW group turbos and can be fixed for £185+VAT inc two-way courier end service. If that fails, the can 'remanufacture' the turbo for £298+VAT. Worst case scenario is a new turbo from them for £740+VAT.

The car is a 2009 Superb 2.0 170CR, and only 4 months out of the used car dealership (who don't appear to want to help out). Skoda Uk can offer 30% off parts and labour, but I'm confident they will be expensive in the first instant, so even with the discount, won't be cheaper.

Has anyone had a similar problem or used Midland Turbo before?

Could be carbon deposits in the VNT mechanism. Sometimes an 'Italian tune up' can help by forcing the VNT mechanism to go through its full range of movement as well as getting the turbo nice and hot which can shift some of the crap. Carbon build up is more likely if the car is always driven gently.

A hard run up a slip road from low revs to the redline in third is a good way to force the VNT to run through its full range. Obviously there is a slight risk with this method given you are already having problems. I do this on a regular basis to get everything nice and hot.

If there is a problem with carbon in the VNT mech. It might have to be taken off and manually de-coked, I can't see an additive doing much to shift this IMO and there is a particulate filter right next to the turbo to bear in mind before shoving additives through it!

Might be worth checking the boost piping to make sure there are no leaks.

There are other factors such as the anti shudder valve (unlikely), VNT actuator and the MAF but my money is on the VNT mech messing about.

A Skoda dealer priced a replacement turbo for my old Octavia and it was crazy money - avoid. Get an independent to undertake the labour.

I can't offer much advice on turbos, but you have the same rights buying from a used dealer as buying a new car, it must be fit for purpose and last a reasonable length of time. The interpretation of "reasonable" is often most questioned on used cars but assuming you paid a fair price for the car, then four months is unreasonable. The Sale And Supply of Goods To Consumers Regulations still applies which means it is up to the dealer to prove there wasn't an inheritant fault when you bought the car.

Have a look here http://www.adviceguide.org.uk/england/consumer_e/consumer_cars_and_other_vehicles_e/cars_buying_a_car_e/cars_buying_a_secondhand_car_e/cars_what_to_watch_out_for_when_buying_a_second_hand_car_e/buying_a_car_from_a_dealer_what_you_need_to_know.htm

Edited 1 March, 201313 yr by artichoke273

I have come here from Land Rover where my Disco used up £2400 of my hard earned pennies needing a new turbo but there are several reports of a sticking actuator on the Disco 3 site that causes similar problems. If you have the know how and gynaecologist

Skills it can apparently be fixed without resorting to a full replacement

Not sure if this will work on a superb though. Now gone for a petrol normally aspirated engine with timing chains buts that's another story!

Thanks for the replies