BMW coming in as the second-least reliable marque on the list may be a bit of a surprise to some. German engineering is known to be some of the best in the world, but nonetheless, CR says 40% of Beemers will see the repairman for something fairly serious within the first four years. Among all the bikes sampled in the survey (not just BMW), the highest single area of malfunctions or repairs centered around the electrical systems of the motorcycle, with 24% of repairs occurring here. This is likely a trend that will continue, as more and more electronic rider aids become the norm in today’s motorcycles.