Two friends of mine both bought a 307 hdi, both almost gave them away after being plagued, and I mean plagued with faults.

One had an issue with the anti pollutant filter ( google it for a whole world of Hurt!) & limp mode. 6 months later with over 3 k spunked at main dealers, specialists, independent garages, he finally gave up as no one could fix it.

The second one had all of the above , and electrical problems that were unfathomable, it actually reduced a grown man to tears, due to the stupendous cost of repairs & parts, the anti pollutant fluid is somthing outrageous like £75 a litre ... He ended up selling it for £800 just to get shot of it, I believe he didn't see any change from 10k for just over two years of ownership.

Utterly shocking cars.