Many good Formula 1 cars got their day in the sun, even if they weren't the benchmarks in a given season. But sometimes bad luck, poor timing or unusual circumstances combine to stop deserving machines crossing the line first.
There have been some very good F1 cars that failed to win a world championship grand prix, which made finalising this top 10 a challenge.
To do so we took into account many factors, including the overall level of the candidates, how close they came to winning a GP and what stopped them succeeding. We also spoke to some of the key figures involved.