Which teammate rivalry is the most famous in F1?

Ayrton Senna and Alain Prost at McLaren (1988–1989) is the most famous. They won a title each as teammates and collided at Suzuka in both 1989 and 1990, with the championship on the line each time.

Did a teammate rivalry ever hand the title to a third driver?

Yes. In 2007, McLaren teammates Lewis Hamilton and Fernando Alonso finished level on 109 points, one point behind Ferrari's Kimi Räikkönen (110). Their internal war arguably cost either driver the championship.

Who won the Hamilton–Rosberg battle?

Nico Rosberg beat Lewis Hamilton to the 2016 title by five points in identical Mercedes cars, then retired days later. Their rivalry defined the mid-hybrid era.

F1 Teammate Rivalries That Cost a Title

The fastest lineup in Formula 1 is two elite drivers in the same car. It’s also the most dangerous, because the only person with an equal machine sits in the other garage. When those rivalries boil over, they don’t just make headlines — they take points off the table and hand championships to calmer teams. Here are the feuds that decided titles.

Prost vs Senna, McLaren 1988–1989

The definitive teammate war. In McLaren’s dominant 1988, Ayrton Senna and Alain Prost won 15 of 16 races between them — and turned on each other. Senna took the 1988 title; Prost won 1989 after the two collided at Suzuka with the championship on the line. They repeated the crash in 1990 (by then Prost at Ferrari). Their rivalry is the template for every teammate feud since: two drivers so evenly matched that only they could beat each other, and often did.

Alonso vs Hamilton, McLaren 2007

The rivalry that literally gave the title away. Reigning champion Fernando Alonso and rookie Lewis Hamilton spent 2007 at war inside McLaren — over strategy, over qualifying etiquette, over team support. They finished the season level on 109 points each, and Ferrari’s Kimi Räikkönen slipped through to take the title on 110, a single point ahead of both. A united McLaren almost certainly wins that championship; a divided one lost it to a third driver.

Hamilton vs Rosberg, Mercedes 2016

At the height of Mercedes’ dynasty, the only real title fight was internal. Nico Rosberg and Lewis Hamilton had the two fastest cars on the grid by a distance, and their relationship curdled from friendship into cold hostility — including a collision in Spain that took both out. Rosberg held on to win the 2016 title by five points, then stunned the sport by retiring days later. It was a rivalry intense enough to end a career at its peak.

Reutemann vs Jones, Williams 1981

An older but instructive case. Carlos Reutemann led the 1981 championship for much of the year while feuding with Williams teammate and reigning champion Alan Jones, ignoring team orders in Brazil. The internal friction and a collapse in form over the final rounds saw Reutemann lose the title to Nelson Piquet by a single point. A team pulling in one direction might have carried him home.

Vettel vs Webber, Red Bull 2010–2013

Red Bull won everything in this period, but the garage was a battlefield. Mark Webber and Sebastian Vettel collided in Turkey in 2010, and Vettel infamously ignored the “Multi-21” hold-position order to pass Webber in Malaysia 2013. The team survived it because the car was dominant enough to absorb the chaos — but it cost Webber any realistic title shot of his own.

The 24-0 takeaway

Pairing two genuinely elite drivers is the single strongest lineup you can build — a “two-car threat” where either seat can win any race, and the best insurance against one driver having an off weekend. That’s exactly why the draft strategy guide rates a top second seat so highly.

The history above is the caveat. In the real sport, two alphas in one team is a management problem as much as a performance advantage. In 24-0 you get the upside without the politics — but the lesson stands: the second seat is where championships are quietly won and, in 2007, spectacularly thrown away. For how the greats stack up when you’re choosing those two seats, see the greatest F1 drivers of all time.