Absolutely nothing, except a puncture but that wasn't the cars fault.
Excellent car. Performance and economy. I do about 70 miles a day commuting to work and the car averages over 60mpg. It is also solid, well-built and comfortable.
Handling and roadholding as also good and the ride is very good if a little on the firm side. I do about 18,000 miles a year and I need a solid, reliable and economical car and this VW is the car for the job.
You can't give reliability points 9/10 with only 18700 miles on it!
I've got one of these cars, as have several friends and members of my family. Yes, they're economical, but they don't average 60mpg! You might get this occasionally, but more likely low 50s.