Porsche’s iconic models have come off badly in a survey by British car warranty provider Warrantywise which has named the UK’s least reliable car brands. The published data compiled from 131,000 warranty plans from between 2021 and 2022 suggests that expensive premium cars have the highest repair frequency and repair costs. The results reflect the high cost of rectifying today’s sophisticated cars although luxury models have always been more costly to maintain than mass-production cars. “Premium prices really do make for premium costs, as is evident from the data in the Reliability Index” said…