My 15 year old Mk1 Ford Focus is still going strong and I consider the
600 mile round trip I will be doing in the next couple of weeks a very low risk for unreliability.In the 13 years I've owned the car I've had a few annoying problems but generally its been very reliable. I have spent an average £200 per annum on maintenance/repairs. DIY for oil and fluid changes, filters, wiper blades, lights and brakes. Non-dealership garage for exhaust manifold, clutch, belts and fuel pump. Mid range tyres (Firestone/Dunlop) at £50. First sign of superficial rust spotted this year (limited to a few inches at the bottom inner of one door) and treated with phosphoric acid, re-sealed and repainted.
I have driven later model Focuses as hire cars and I prefer the interior of the older Mk1 but the later models have been Ok with respect to driveability - much surer handling than some of the recent French branded cars that I've had on hire. I prefer petrol models rather than diesel but perhaps that's more to do with I'm used to driving.