Is TSI or TFSI better?
Although the Volkswagen TSI is technically superior, both the TSI and TFSI are reliable engines. Despite their issues, both engines are known to last longer than 200,000 miles if maintained with care. The VW 2. TDI engine is considered reliable when properly maintained, but it does have its share of potential problems, particularly in earlier EA189 engines. Common issues like DPF clogging, EGR valve failure, and timing belt problems can be managed with routine maintenance and proactive care.