Imagine MotoGP's grid unified under a single engine configuration for the first time since the shift to four-strokes in 2002—a thrilling yet divisive moment in racing history that begs the question: is this the pinnacle of progress, or the start of something stifling? Dive into this exclusive exploration, and you'll uncover why the V4 is reigning supreme... for now.
Next year marks a historic shift: every bike in MotoGP will sport a V4 engine, ending the era of Inline competitors that started back in 2002 when two-stroke 500cc machines were retired. For over two decades, the battle between V-shaped and Inline engines has been fiercely competitive, with neither side claiming an outright monopoly until recently.
Looking at rider championships, V-powered bikes have secured 14 titles overall. This includes two for Honda's innovative V5 design, followed by an impressive 12 more split between Honda and Ducati's V4s, which have steadily become the grid's majority. On the other hand, Inline engines have notched up ten world crowns—nine courtesy of Yamaha and one from Suzuki, when Joan Mir clinched the 2020 title riding for the Japanese brand.
That momentum continued with Fabio Quartararo delivering Yamaha's latest MotoGP championship in 2021, right before Suzuki made a dramatic exit by snagging victories in two of its last three races in 2022. Those triumphs stand as the Inline's final hurrahs, at least for the foreseeable future, as Yamaha has announced they'll align with Ducati, Aprilia, KTM, and Honda by adopting V4s for the 2026 season.
Suzuki's own journey in MotoGP vividly illustrates the evolving landscape. The factory once wrestled with its V4 GSV-R model before pivoting to an Inline setup in 2015, which proved transformative.
Sylvain Guintoli, a former MotoGP rider and World Superbike champion, was instrumental in crafting the championship-winning GSX-RR as Suzuki's official test and wild-card pilot. Now a MotoGP analyst for TNT Sports while juggling Endurance World Championship duties, Guintoli shared his insights with Crash.net. 'Suzuki experimented with a V4 ages ago, but upon their return, they opted for an Inline during my time there,' he recalled. 'It paid off big time, leading to titles in 2020 and 2021. That's when the V4s began their ascent to dominance.'
Guintoli attributes this rise to advancements that let riders unleash unprecedented power. 'Aero enhancements, paired with the V4's horsepower edge—essential for combating the drag from wings and other aerodynamic aids on long straights—really tipped the scales,' he explained. 'Plus, ride-height devices make these bikes more like drag racers, allowing better traction and power deployment. Unlike traditional motorcycles where you have to throttle back until fourth gear, these features let you harness the full potential right away. Combined with superior grip, it's made the bikes far more efficient, empowering riders to push limits like never before.'
He believes this advantage shines brightest as race conditions intensify, particularly when tire grip diminishes. 'As the session progresses and grip fades, maintaining corner speeds becomes tough,' Guintoli noted. 'But with a V4, you can scrub speed rapidly, pivot sharply at the corner's peak, and blast out with all that power once upright. This minimizes time loss compared to stubbornly clinging to speed—an Inline's forte. That's the edge, in my view... though who knows if it'll hold with the 2027 regulations!'
And this is the part most people miss— a potential game-changer on the horizon. MotoGP is gearing up for 850cc engines in 2027, scrapping ride-height devices and switching to Pirelli tires. This could erase the V4's current Michelins-based rear-grip advantage, leveling the playing field in ways that might favor other designs.
'It's too early to say, but the 2027 bikes will feel more organic—no ride-height tricks, less aero clutter—and that could shift dynamics dramatically,' Guintoli mused. 'Might an Inline4 be worth reconsidering?'
But here's where it gets controversial: despite the data and expertise tilted toward V4s, with even Yamaha chasing that elusive rear grip through the switch, no manufacturer has publicly hinted at developing an Inline for the 850cc era. Yet, is this inertia due to genuine superiority, or just the comfort of the status quo? Could sticking with Inline have kept innovation alive, preventing a potential monoculture in MotoGP?
Sylvain Guintoli is gearing up for an inspiring challenge: running the 2026 London Marathon in full racing leathers to honor his son Luca. To back his fundraising for the children's cancer charity PASIC, check out his page at: https://2026tcslondonmarathon.enthuse.com/pf/sylvain-guintoli.
Peter, with two decades in the MotoGP paddock, has witnessed icons like Valentino Rossi rise and fall. He's been central to covering Suzuki's departure and the ongoing saga of Marc Marquez's injuries.
What are your thoughts on this V4 takeover? Do you believe it's a natural evolution, or a missed opportunity for diversity in racing? Should Yamaha have defended the Inline longer? Share your opinions and debates in the comments—let's hear if you agree or disagree!
