Here are the engine options available for the 2010 Jetta:
* 2.5L 5-cylinder: This was the standard engine for the base Jetta, Jetta S, and Jetta SE trim levels.
* 2.0L Turbocharged 4-cylinder (TSI): This engine was available in the Jetta SportWagen and Jetta SEL trim levels.
* 2.0L Turbocharged Diesel 4-cylinder (TDI): This engine was offered in the Jetta TDI trim level.
Please specify the trim level of your 2010 Jetta, and I can tell you the exact engine size.