Newly designed automobile engines are still tested in the same way. While computer analysis has replaced a lot of the "run, break, repeat" iteration, new engin

Newly designed automobile engines are still tested in the same way. While computer analysis has replaced a lot of the "run, break, repeat" iteration, new engine designs will generally spend thousands of hours on the engine dyno before and concurrently with integration (road) testing before they're shipped in a model. While computer simulation has gotten pretty good, there's no substitute for the final product, especially when it comes to tuning engine control maps to pass emissions and develop power efficiently and safely.