I own a CBR urban hybrid bought in 2009, not the greatest but robust enough, I use the bike daily for an 8 mile commute (road and canal path nothing too strenuous). I've only ever replaced the tyres when first bought for puncture resistant set and brake pads. I clean and maintain weekly and the bike is still going strong. My gearing and cables are still originals and bike still looks decent. Like anything else if you maintain it well enough it will last. It's noticeably heavier than my friends other bikes and the top speed isn't great either. If you want a decent performer for serious cycling then I'd avoid, my bike wouldn't survive even light off road cycling, however it's comfortable and robust enough for the daily jaunt to work and back.