To start off with I love using the bike for work every day, I always used a racing bike for work previous over the last 7 yrs or so, I have had my bike for 4 months now, clocked up 600 miles, in that time it has lost power about 2 times, not a real problem as you reopen the meter, you can be on your way again. I changed the tyres and seat like others did !! I would definitely recommend to friends & Family it's built like a tank very good Quality !!