TDI is a marketing term used by Volkswagen Group for its turbocharged diesel engines that have an intercooler in addition to the turbo compressor.

Are TDI engines good?

Diesel engines are considerably more durable than gasoline engines, the engine blocks should run for darn near ever in our TDI's. However, all of the crap they've had to add onto that engine, mostly for emissions purposes, is temperamental, unreliable crap, which makes the care overall significantly less reliable.

Which is better TDI or TSI?

Which is better, TSI or TDI? The TDI engine is a diesel engine that's made by the Volkswagen Group. TDI stands for 'Turbocharged Direct Injection. ... While most modern TSI engines are capable of excellent fuel economy of 45mpg or more, they generally fall short of TDI engines, some of which manage over 65mpg.