60k + mileage should not be an issue, providing the car has been serviced and
had the oil and filter/s changed regularly. (Ferrina's car would make someone a nice buy)
The diesel engine is a 3 cylinder 1.5 litre unit, and was based on the Mercedes Benz
4 cylinder 2.0 litre 'A' Class engine....they just simply removed one cylinder,
but in so doing they created the most powerful diesel engine of it's class !
And it still is to this day, which is quite an achievement.
As quite rightly stated by ferrina there are 2 variants available, 68hp and 95hp. (HP, not BHP)
Mechanically there are no difference between either of them. It's all in the ECU mapping, so do
not dismiss a 68hp car if it has all the right spec/gizmo's/gadget's etc that you are looking for.
Both engines' ECU's can be re-mapped easily. The 68 can be mapped up to 95 and beyond if desired.
Reliability is not an issue with re-mapping, as there are plenty of members on here and elsewhere
who have had their engines re-mapped and can testify to the reliability AND the fact that economy
has in no way suffered. In fact a remap can actually reduce fuel consumption if driven in the same
manner as it was before !
So what else then....well even if kept as standard, a change of air filter to a more free flowing type
such as ITG, K&N, Pipercross, BMC etc is highly recommended whether one has a re-map or not.
A change of the rear silencer to a less restrictive design, such as Remus (stainless steel) or a Brabus
(nearly twice the price, but mild steel) will also reap rewards.
But, for the same cost of a Brabus rear silencer one can have a custom stainless steel system made
with a Sports CAT and a lifetime guarantee !
As ferrina also points out, there are 2 choices of transmission, semi-auto and manual.
Mine is a 6 speed 'softouch' semi-auto, and ferrina's is 5 speed manual. The semi-auto can with it's
6th gear deliver a slightly better fuel consumption, but if I had my choice again I'd go for the manual as
there can be the occasional annoying issue with the semi-auto.