Diesel Particulate Filters mean that the cars cannot be driven short distances from cold without them clogging, and they anyway only last around 80k miles and cost £500 to £1,000 to replace.

Exhaust Gas Recirculation valves tend to last about 5 years and cost £500 - £1,000 to replace.

Dual Mass Flywheels fitted to all four cylinder manual diesels tend to last 40k - 100k miles and, together with a clutch, cost around £1,200 - £1,500 to replace.

Turbos on diesels are fairly prone to failure and cost £1,500 - £2,000 to replace.

And the diesel engines fitted to Peugeots are all timing belt engines, requiring a new belt and tensioner around every 60k miles costing around £500.