As has been mentioned Totalmini is a good place to ask this question, but do avoid the term Bini.
I have owned 5 MINIs, and the wife 4, from 1st gen Cooper to 2nd gen JCW & a JCW Countryman. We have owned a R55 Clubman S, R56 Cooper S 192, and a R56 factory JCW before the R60 JCW Countryman. All but the factory JCW have been pretty trouble free, Cooper S had a number of belt tensioners but generally good. My preference was always for the Clubman for the extra boot space, but the wife liked the hatches. Early reviews say the Clubman handles better, but loses out by 0.5 secs on the 0-60.
Your post mentions an R56 S, just to clarify as many get mixed up with the R numbers, this is the 2nd gen turbocharged Cooper S, post November 2006. This is important as it's very different to the 1st gen supercharged version as far as owniership and running cost go.
The R56 S is a really good car, but there are issues which I'll touch on later. The engine pre September 2010 (i think) was a Peugeot Citroen block, changed for a BMW engine after the facelift. The BMW engine brought with it a in increase in BHP, 165 to 182 i think, and in my opinion the BMW engine is a better drive. All cars come with a 6 speed Getrag gearbox. You also have the option of the dealer fit JCW tuning kit which took the PSA engine to 192bhp, not sure if this continued after the engine change.
Things to look out for;
- the death rattle. Early MCS, i think it was sorted by the time the BMW engine came in, suffered from sometimes being really noisy on cold start up (gattling gun type noise). This was solved by changing the timing belt tensioner, but it took MINI a lot of attempts.
- the thermostat housing sometimes cracks causing coolant loss.
- clutches have always been a bit of an issue if neglected.
- rattles can be an issue on some cars, but I've always found these easy to sort (I haven't had many)
- the standard boost stereo, especially pre facelift is poor, for both sound and user interface and replacing the headunit isn't easy. Mikey at www.newministuff.com does great upgrades (have one myself at the moment). My choice would be look for a car with sat nav and Harmon Kardon for ease of use and sound.
- packs such a Pepper and Chilli add resale value
- manual aircon on early cars is fiddly to use, look for the standard auto aircon that came in later on Chilli pack cars.
Be aware if you go & read Totalmini that people tend to post in the advice and tech sections when they have issues, those who have a happy driving experience (and that's the vast majority) only visit for the socal side.
You are unlikely to achieve the inflated mpg figures BMW quote, I got 34-36 from my S on mixed driving and the wife got 30-31 on her around the city commute. Buying wise check the spec well if buying privately or from an independent as people don't know their specs and can't value the plethora of options when selling.
Edited by humph, 23 October 2014 - 12:47 PM.