Spark Plug and Ignition Coil Replacement: Replace spark plugs every 30,000-40,000 miles and inspect ignition coils regularly. Conclusion: Is the VW 1. TSI Reliable? The VW 1. TSI engine is generally reliable, particularly the EA211 version, which resolved some of the earlier issues found in the EA111 engines. Conclusion: Is the VW 1. TSI Reliable? The VW 1. TSI engine is generally reliable, particularly the EA211 version, which resolved some of the earlier issues found in the EA111 engines. However, regular maintenance is critical to prevent common issues like timing chain failure, oil consumption, and carbon build-up.Combined with its stylish design and world-class performance, the Volkswagen Jetta, has a reputation for its impressive reliability. On average, a well-maintained Jetta featuring a 1. T engine can reach and exceed the 200,000-mile mark. Long-Term Durability of Volkswagen Jettas Generally, the Volkswagen Jetta can last well over 150,000 miles, but this heavily relies on regular maintenance and driving habits. One of the most significant aspects contributing to the long-term durability of the Volkswagen Jetta is its build quality.A: The 2006, 2009, 2010, 2012, 2013, and 2019 Volkswagen Jetta models are the ones to avoid due to their numerous reported issues and lower reliability scores. These model years have been plagued by various problems, ranging from transmission failures to faulty braking systems and engine stalling.The Volkswagen Jetta Reliability Rating is 4. The average annual repair cost is $609 which means it has average ownership costs. Repairs are less severe and less frequent than the average car, so the Jetta is one of the more reliable vehicles on the road.The Volkswagen Jetta is a prime example of German car-making excellence. This compact sedan has gained a reputation for durability and high-quality craftsmanship. With proper maintenance, many Jettas continue to perform reliably even after reaching 300,000 miles.Volkswagen Jetta – Compact, Efficient, and Comfortable Road trip-friendly features: Up to 42 MPG highway. Comfortable ride with supportive seating. Wireless Apple CarPlay® and Android™ Auto.