totally agree with you.. I bought one resonantly and very comfortable car. When i went in the southern highway to galle (to & from), hardly you can notice it is going around 100-120 (as still you feel like as if it is going around 50-60 ! Average petrol consumption is around the rate you have mentioned in traffic (I may be able to give some proper figure soon )
Yes you will have to depend on ebay (UK) for most parts (as per the previous owner as well ) but general stuff like vipers, bulbs etc you can use common once available in market in most cases. things like brake pads, plug leads & injectors you can order at low cost from ebay uk rather than getting from local shops which will be bit costly.
(Experts, pls correct me if i`am wrong !)