Ever since the dawn of the automobile, we have been looking at ways of getting more power out of the internal combustion engine. For the longest time, the simplest way to achieve this was to increase the engine capacity until the desired power requirements were met. 

In recent years fuel prices and emissions regulations have forced engineers to design more efficient engines and while we now have plenty of low-capacity motors that produce big outputs, that same technology has enabled larger engines to become more efficient too.

We may never see the likes of the awesome airplane-engined monsters of the early 20th century (we have included a few here as reference) but at least there are still some massive capacity engines out there to keep us happy until the all-electric future takes over. Read on to see some of the biggest internal combustion engines ever fitted to automobiles from both the present and the past.