: Must be replaced at strict intervals (usually every 80k–120k miles) to prevent catastrophic engine damage.

: Can clog if the car is only used for short city trips.

: The 1.9 TDI (ALH/PD) (late 90s–2000s) is widely considered the most reliable due to its simple mechanical injection and iron block.

: A luxury SUV capable of heavy towing while maintaining relatively high MPG. Potential Maintenance Issues

: TDI stands for Turbocharged Direct Injection . These engines are known for high fuel efficiency and torque, making them ideal for long-distance highway driving.

Buying a Volkswagen diesel (TDI) involves navigating a unique secondary market shaped by the "Dieselgate" emissions scandal. While VW stopped selling new diesels in the US in 2015, many used models are prized for their legendary longevity, such as the 1.9 TDI .

: The most common entry point, known for balancing size and efficiency.

: The 2.0 TDI found in newer Jettas and Golfs offers better performance but has more complex emissions systems like the DPF. Common Models to Look For