There are thousands upon thousands of people in this world who run their cars to megga milage without any bother whatsoever,when you consider how many cars there are in the world some are bound to go wrong sometimes .With proper service and care the majority of cars will give a trouble free life.

Warranty data I saw recently (sorry, don't have the link) suggested about 1-2% of cars have problems with DPFs and around 3% with injectors and a similar number for turbos.

Given that around half of new cars are turbo diesels with DPFs, that doesn't sound so bad to me.

Bad news if you are in the minority though! I have a friend with a Toyota Verso 2.2 D4D, it's needed 4 new injectors (under warranty), a new ECU (paid for by Toyota, goodwill) and now the warranty has long expired the head gasket has failed... Bill could be anything from £2k to £7k to fix...

They're beginning to wonder if the petrol version might have made more sense!

No problems with their DPF, DMF or turbo...at least not yet... :)

From the experience of people I know, I would say that there are more failures in recent turbo cars where they have extracted far more hp than they used to. For example, the current BMW 320d is as powerful than the 330d from a few (7-8) years ago. While the old 330d could often manage 400,000km, the newer 320d will quite often blow a turbo in half that.

Company drivers don't mind as they dispose of the car by 100,000km and they benefit from low CO2/km figures and low tax, but private buyers who keep cars longer may find it an expensive choice.

Steven Quas , Hamburg