I have a Manual VTi since 3 years now mashALLAH, and trust me once you own a good car, a few km in the mileage doesnt hurt you that much, upgrading from a Gli to a 1.8 VTi would be enough, although it is your concern, the mileage, i believe it completely depends on your driving pattern, i drive at normal speeds in my car, 60-70km/hr at tops, and once a month i drive my car to around 160km/hr over a stretch of a good 5 kms, and im pretty pleased with the mileage, although ive never really calculated it formally, but as long as the car is puting a smile on my face, these minor things dont really matter.
Overall its more of a car than GLI, buy it, and resale is not a problem as well, you can fetch good bucks for it, wou zamanay chalay gaye hein jub log toyota toyota kartey they, people have moved on, honda is equally good with resale.