I bought my Rio5 new with 9km on it. I drove many comperable models from different mfg including Chev Aveo, Toyota, Dodge Caliber etc. I was impressed with the handling and jump for such a small car. I've had no issues with summer or winter driving. I've been religious with oil changes but haven't had to do anything major. Just recently at 70K did I have to replace the set of belts before a long trip. If I had to pick at something, it would be the OEM Kuho tires. My front set only lasted about 40K.
Warranty is great (8 yrs, 160K km) although nothing has gone wrong. Orig brakes still have 40-50% left on them and still getting close to 450km on 40L of gas.
An excellent car for the money!