When comparing a 1. L engine to a 2. L engine, the primary difference lies in their displacement, which affects power output and fuel efficiency. The 1. L engine, being smaller, is generally more fuel-efficient and economical, making it ideal for daily commuting and city driving. The 2. Power is roughly correlated with how much fuel you can burn, so an engine with a bigger displacement (more volume) traditionally has more power. Bigger doesn’t always mean better because other factors can affect power, like compression.Engines between 1. It is also lighter and more compact than a 6-cylinder, making it a great compromise.