年底想換車，但以經濟取向為優先考量，考慮油耗和維修保養，應該選柴油車還是油電混合車？

Diesel.

A hybrid vehicle has 2 major economical disadvantages:

1. The vehicle's price is more expensive compare to conventional vehicle.

2. The battery's life lasts 10 years in average.

A hybrid vehicle is only economically practical when the fuels are expensive. But if the fuels are not expensive, the extra cost you pay won't convert to any economical value.