A dominant car lasts 1.4 seasons, and none has ever kept dominating the year after

Every time a team steamrollers a season the same line shows up: this one is set for years. We counted every run of dominance since 1958, using real results, and the number that comes out is a different one. The average run lasts 1.39 years, 13 of the 18 last a single season and only one reaches three. And the part we did not expect: of the 17 runs that already have a following year, not one kept dominating.

All 18 runs, longest first

We call it dominance when a constructor wins at least 60% of a season's Grands Prix, three in every five. The last column is how much it was winning during the run.

That is 25 dominated seasons out of the 69 run, so roughly one in three has a car clearly above the rest. What does not happen is that car staying there.

The exception that proves the rule sits at the top: the Mercedes of 2014 to 2017, four straight seasons winning nearly eight races in ten. It is the only run longer than two years in 69 seasons of the championship. Every other cycle remembered as unbeatable, the 1988 McLaren, Schumacher's Ferraris, the recent Red Bull, shows up here broken into one and two year pieces, because in between there were seasons where they won a lot but not that much.

And the following year it always falls

This is the part we did not expect to come out so clean. For each run we looked at the season immediately after its last year.

Of 17 cases, zero stay above 60%. The average for the following year is 27.4% of wins, against the 70-odd percent of the run itself. And in 10 of the 17 the team does not even end up as the biggest winner.

The extremes are dizzying. Cooper-Climax went from dominating to winning no races at all in 1961. There are four cases of a fall to zero wins, from steamrollering to not winning once.

Why it falls, and why it is not the regulations

The comfortable explanation is that dominance breaks when the rules change. It does not hold up: several of these falls happen under the same regulations as the year before, and some of the runs start midway through a stable technical cycle. What fits the table better is duller: when a team finds a big advantage, everyone else spends the following year copying it while they spend theirs defending a position they already hold. The team behind has more to gain from copying than the team in front has from refining.

There is also a counting effect worth not ignoring: a season above 60% of wins needs everything to go right, and part of that is luck. The following year that part falls differently even if the car is still the best. It is the same reason a 60% does not repeat even when nothing has changed.

The open run

There is one run still open: Mercedes in 2026, on 71.4% of wins. It stays out of the following-year count because that year has not been run. If history is any guide, the likely outcome is not a total collapse, it is winning considerably less. The average of the 17 previous cases says 27.4%.

If you want to test the opposite, what would have happened had that car stayed the best, it is built into What If?: you can set any grid you like and run the whole season. And the seasons one by one, with their champion and context, in the season index. And if what you want is not how long they last but which one was the most dominant of all, we measured that separately by sitting the same driver in each of them: the most dominant car in F1 history.