Sounds ugly....

Would argue all mfrs have some rate of lemon cars and doubt P's rate is any better/worse than relevant comparables....

In US, thanks to both the rather competitive mkt and our uniquely aggressive/well-compensated lawyers, we have rather consumer-friendly auto "lemon" laws, where mfr needs to buy-back car/close out lease.....

And leased cars in US have further advantage of lease-gap cvg, so total collision/fire loss or theft is fairly irrelevant to lessee....insurance pays off lease....and one simply gets another $0-down, leased new car....

If UK doesn't have useful lemon laws, then I'd ask colleagues which major mfrs seem to differentially treat repeat custs better when warranty/lemon issues arise.....and calculate risk of such issues (which can occur w/any car) vs perf/safety/reliability/useability of cars being compared....e.g., some cars may offer better likely reliability (lots of mythology around reliability, as mfrs have closely-guarded warranty repair claims/cost data, but public data is statistically irrelevant/anecdotal) but entail more dubious active/passive safety....usual series of trade-offs to consider, w/little hard, quantitative data and many common-sense, qualitative comparisons....