I have had problems with all of them T! It's when they give you some bullshit guff excuse and you know better and tell them, even nicely they don't like it! They are all ill informed about their wholeproduct range We will always have more info as we are a community of owners! All they have is some data planted on a computer that may and more often than not, may not give a proper fix for an issue!
If it wasn't for us sticking by the brand they would have gone out of business a long time ago! Instead they are the best selling cars of the group! But for how long if customer service is badly dissaffected?
Wikipedia section on the MINI. Note the bit at the bottom about the 'cold start rattle' (and that is an old fix at east 2 maybe 3 years old! and they still haven't resolved this issue!)
Dr. Alex Moulton (designer of the suspension system for the
classic Mini), spoke about the new Mini in an interview with MiniWorld
magazine: "It's enormous - the original Mini was the best packaged car
of all time - this is an example of how not to do it. It's huge on the
outside and weighs the same as an Austin
Maxi. The crash protection has been taken too far. I mean, what do
you want, an armoured car? It is an irrelevance insofar as it has no
part in the Mini story."
of the new Mini
also cite the fact that it is 60 cm (2 ft) longer, 30 cm (1 ft) wider
and almost twice the weight of the classic car - yet it has less rear
leg room and less luggage space. Much of this is to do with modern crash
protection requirements and the desire to incorporate features such as
air conditioning, a supercharged engine, modern emissions controls and a
higher level of front-seat comfort than the classic Mini was capable
Mk I convertible owners frequently criticise the poor rear visibility
in the convertible.
the roof up the wide areas of cloth down the sides of the car block
visibility to the rear quarters and the lack of washer/wiper on the
small rear window - combined with the tendency of all flat-backed cars
to accumulate dirt on the rear - effectively eliminates all rear
visibility. Even with the roof down, the large roll-protection bars
above the back seats and the bunched up cloth of the folded roof tends
to block a significant fraction of rearward visibility. In an attempt to
counter this problem when reversing the car, the Mini convertible comes
with rear-mounted proximity sensors as standard equipment (optional on
the Hardtop Mini). In designing the second generation car, Mini
responded to these issues by using pop up roll-bars, and larger rear
The rear (club) door of the Mini Clubman is on the right-hand side of
the car, regardless of the intended market. This means that in
right-hand drive markets (including the car's home market), the rear
door is on the road side of the car, requiring rear passengers to exit
into the road.
Owners of Mk II Cooper S and John Cooper Works models have been
complaining about "Cold Start Death Rattle". 
It has been reported that BMW has acknowledged this as a fault, and has
issued a PuMA Measure 10686850-13.