The Rise and Fall of Inline Engines in MotoGP: A Controversial Shift?
In a sport as dynamic as MotoGP, the engine configuration has long been a topic of debate. The upcoming season will mark a significant shift, with an all-V4 grid, a first since the four-stroke era began in 2002. But here's where it gets interesting: this decision might just reshape the competitive landscape.
For over two decades, since the departure of 500cc two-strokes, MotoGP has witnessed a relatively balanced battle between V and Inline engines. The riders' titles have been split almost evenly, with 14 going to V-powered machines, and 10 to Inline-powered bikes. However, the recent dominance of V4s, particularly with the success of Honda and Ducati, has left many wondering if the Inline4 is a thing of the past.
And this is the part most people miss: the story of Suzuki's comeback. After struggling with its V4-powered GSV-R, Suzuki returned in 2015 with an Inline engine, and the results were remarkable. With the help of former MotoGP rider and World Superbike champion Sylvain Guintoli, Suzuki developed the GSX-RR, which went on to win the 2020 championship with Joan Mir. This was followed by Fabio Quartararo's title win in 2021, making it two Inline4 championships in a row.
So, what triggered this shift towards V4s? Guintoli believes it's a combination of factors, including the superior horsepower of V4s, the drag from advanced aero devices, and the ride-height mechanisms. These innovations, he says, have made the bikes more efficient, allowing riders to harness unprecedented power. But here's the twist: as MotoGP moves towards smaller 850cc engines, ditches ride-height devices, and adopts Pirelli rubber, this V4 'edge' might just disappear.
"We'll see how things unfold in 2027," Guintoli says. "With more natural bikes, less aero, and no ride-height devices, the playing field could level out. Maybe an Inline4 would not be a bad idea!"
Despite this intriguing possibility, no MotoGP manufacturer is currently known to be evaluating an Inline 850cc engine project. The V4 configuration, with its wealth of knowledge and data, remains the favored choice, even for Yamaha, which is making the switch in search of improved rear grip.
So, is the Inline4 engine a forgotten champion, or is it poised for a comeback? The upcoming rule changes might just provide the perfect opportunity. What do you think? Share your thoughts in the comments below!
