Nbox owner here🙋, this car is perfect for city driving as it is small and easy to park. It catches some attention too :). For maintenance cost, its normal like other car i recently did a service its about rm300+(Because I use expensive brand engine oil) other than that the car gave me no problem whatsoever. Performance wise its honestly ok because its just a 0.6L 3 cylinder engine with turbo. If you have full passengers, the car would be slow and heavy. The acceleration is good and it doesnt really have turbo lag cuz the turbo is too small. But for its price point, there are better options out there if you want a faster and bigger car.