In all fairness the power steering / water pump belts never look good as its a small belt around tight pullies they crack badly on the inside. I have never c hanged one
I use mine round the doors and work is 11 miles each way. I have a 130 TDCI and so don't drive it like a porche, can't see the point. On the computer I have got 51.6 mpg and if I put £70 in when the light comes on I get a range of over 700 miles come up
They are what they are. All makes have their issues. Mondy's are cheap enough to buy and run. The main issues are injectors, fuel pump and DMF.