system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are diesel engines so much shakier than conventional petrol engines?

E: Post solved, thanks for all your informative replies!
gpt
Depends on the vehicle you mean. But one significant difference is that they run at lower RPM which makes each of the engine strokes more noticable. If you mean engines of big vehicles like trucks or tractors, then it's also that they have huge engines compared to that of a car.