Integrated Motor Assist

Integrated Motor Assist (IMA) is a hybrid vehicle powertrain technology developed by Honda, used in the Honda Insight, the Honda Civic Hybrid, and the Honda Accord Hybrid.

It was first introduced in 1999 with the debut of the first-generation Honda Insight. It uses an electric motor positioned between the vehicle's internal combustion engine and transmission. The motor performs multiple functions, serving as a starter motor, generator, engine balancer, and providing power assist during acceleration. The system is regarded as one of the earliest examples of what are now called mild hybrid systems.

IMA was Honda's primary hybrid system through the 2000s and early 2010s, and was employed in several models including the Honda Civic Hybrid, Honda Accord Hybrid, and Honda CR-Z, before being phased out in favor of Honda's newer hybrid systems.

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