Originally Posted by glye

Hi! I know nothing about MK1, but in general terms: Beware of any signs of it having crashed before, and ask about this. Check the pictures carefully for any signs of cracks. Especially if you or the owner are heavy. The MK3 was strengthened in strategic spots, afaik because MK1 and MK2 were breaking (afaik mostly the rear swingarm, but also the front swingarm). Ask how far it has been ridden, that's nice to know. Beware that for MK3 the manual specifies that certain frame parts should be replaced after X kilometers, see earlier in this thread. Ask about cracks in the elastomers, I guess? I don't know if MK3 replacement parts will fit an MK1. Better not go mountain biking with it

If/when you buy it, maybe check for play in the swingarm bearings and headset bearings. Check if rims are worn (this is a rim brake bike I guess). Best of luck!

Originally Posted by jackyharuhiko

Better find some pre-owned Mk3 or even Mk2 - given that the oldest Mk3 is already 7 years old - the price should be cheaper? If it’s the real Mk1 the youngest one is like 17 years old? I’m not sure when did the owner change the parts.. this is very important. But the frame - like glye said, better check for cracks etc.

Originally Posted by Jipe

Old folding bikes (even very old) can be excellent opportunities because many folding bike owners don't often use their bike and for very small distances. Its for instance the case of boat and small airplane owners.

So, its possible to find very old folding bike in a like new state.

Since its a Birdy 1, it has rim brakes, look if the rims and brake pads are the original ones and at the wear of the rims and brake pads to estimate how many km the bike did.