The Cobalt LS is powered by a 2.2-liter Ecotec inline-4 engine (engine code L61).
The Cobalt LS is a trim of Chevrolet’s compact Cobalt lineup produced from 2005 through 2010. While the LS commonly used the 2.2L engine, other trims in the Cobalt family could be equipped with different powerplants, including a larger 2.4-liter Ecotec on certain models and a turbocharged 2.0-liter in the performance-oriented Cobalt SS. Engine availability varied by model year and market.
Engine options across the Cobalt lineup
To place the LS engine in context, here is a quick overview of the engines used in different Cobalt trims over its production run.
- The 2.2-liter Ecotec inline-4 (engine code L61) — standard on most Cobalt LS models, with a choice of manual or automatic transmission.
- The 2.4-liter Ecotec inline-4 (engine code LE5) — offered on some higher trims (such as LT/LTZ) for more power.
- The 2.0-liter turbocharged inline-4 (engine code LNF) — used in the Cobalt SS, the performance variant, not in the LS.
In practice, buyers looking at the Cobalt LS should expect the 2.2L Ecotec as the standard powerplant, while other trims in the generation could feature the 2.4L or the turbocharged 2.0L in different configurations.
Summary
For the Cobalt LS, the core engine is a 2.2-liter Ecotec inline-4 (L61). Other trims in the Cobalt lineup offered alternative engines, notably a 2.4-liter and, in the high-performance SS, a turbocharged 2.0-liter. Always verify the exact engine in a given vehicle by year and market.