Yeah, absolutely. Ski-Doo still runs on Rotax engines. As of 2025, every new Ski-Doo snowmobile you can buy comes with a Rotax under the hood—built by BRP (that's Bombardier Recreational Products). This whole thing goes way back to 1963, and it's pretty much been the backbone of Ski-Doo's engineering ever since. The engines range from a basic 550cc fan-cooled two-stroke all the way up to that wild 850 E-TEC turbocharged beast, plus the 900cc ACE four-strokes. They're all tuned specifically for Ski-Doo platforms. Look, it's simple—BRP owns both brands. So they can do all their R&D together, which is pretty slick. Every Rotax engine is built to fit a specific Ski-Doo chassis, so you get better performance, reliability, and weight distribution. The engineers design each one to match exactly what a trail rider or a mountain climber needs. That vertical integration thing? It gives Ski-Doo a real edge in reliability and fuel economy. Here's what you can get for 2025: Honestly? They're up there with the best. The 850 E-TEC has this reputation for just not dying—even in brutal conditions. I've heard stories of guys getting 10,000+ miles out of them with regular maintenance. BRP's E-TEC direct injection cuts down on carbon buildup and makes cold starts way easier. The ACE four-strokes? Those things can go 20,000 miles without major work, easy. Surveys put Ski-Doo's reliability ahead of Yamaha and Arctic Cat, and about even with Polaris. Nope. Not a single one. Every Ski-Doo since 1963 has used Rotax engines exclusively. BRP doesn't shop around for other suppliers. The only exception is some really old pre-1963 models that used random engines. But that's ancient history. For modern sleds, it's all Rotax, all the way. It's come a long way since the '60s. Back then, it was all simple two-stroke fan-cooled stuff. Then the '80s brought liquid cooling, which was a big deal. The '90s? Electronic fuel injection showed up. In the 2000s, we got the ACE four-stroke platform and the E-TEC direct injection, which slashed emissions and boosted fuel economy. The 2010s introduced the 850 E-TEC with semi-direct injection. And now, the 2020s gave us the Turbo R—turbocharging meets direct injection for insane power in a two-stroke. BRP keeps dumping money into Rotax R&D, focusing on cleaner emissions, more power, and better reliability. BRP's been clear—Rotax engines aren't going anywhere. They're exclusive to Ski-Doo for the foreseeable future. They're working on new stuff too, including hybrids and possibly even full electric powertrains under the Rotax name. The Rotax E-Power electric motor—already used in Can-Am and Sea-Doo products—is being adapted for snowmobiles. So whether it's gas or electric, future Ski-Doos will still have Rotax power. That heritage isn't ending anytime soon. "Rotax engines are the heart of every Ski-Doo. We design, test, and build them specifically for our snowmobiles. No other engine can match the integration and performance we achieve with Rotax." — BRP Engineering Statement, 2024 You can, but it's a pain. You'll need to modify mounting points, electrical systems, and exhaust. BRP doesn't sell conversion kits, so you're on your own. Some guys swap 850 E-TEC engines into older Rev or XP chassis, but it takes welding and custom fabrication. Not for the faint of heart. They're about what you'd expect for a premium engine. A top-end rebuild on an 850 E-TEC runs around $800 to $1,200 including parts and labor. If you need a full engine replacement, that's $3,000 to $6,000 depending on the model. Parts are easy to find through BRP dealers or aftermarket suppliers. Routine stuff like pistons and seals isn't too bad if you know what you're doing. Yeah, they're picky. BRP says use only their XPS synthetic oil formulated for E-TEC engines. Using something else can cause injector fouling, carbon buildup, and shorten the engine's life. The oil injection system is calibrated for XPS viscosity. For ACE four-strokes, they recommend 5W-40 synthetic meeting API SN specs. Stick with the right oil or risk voiding your warranty. With good maintenance, two-stroke E-TEC engines typically go 8,000 to 12,000 miles before needing a top-end rebuild. Some owners get 15,000+ miles by replacing pistons and rings regularly. ACE four-strokes? Those can hit 20,000 to 30,000 miles with routine oil changes and valve adjustments. The secret is using the right oil, not overheating, and following BRP's maintenance schedule.Does Ski-Doo still use Rotax engines
Why does Ski-Doo continue to use Rotax engines?
What types of Rotax engines are available in current Ski-Doo models?
Are Rotax engines reliable compared to competitors?
Do any Ski-Doo models use engines from other manufacturers?
Engine Model
Displacement
Type
Horsepower
Best For
550 Fan
550cc
2-stroke fan-cooled
48
Entry-level, youth, utility
600R E-TEC
600cc
2-stroke liquid-cooled
125
Trail, cross-country
850 E-TEC
850cc
2-stroke liquid-cooled
165
Performance, mountain, trail
850 Turbo R
850cc
2-stroke turbocharged
180+
Deep snow, extreme mountain
900 ACE
900cc
4-stroke liquid-cooled
90
Touring, utility, fuel economy
900 ACE Turbo
900cc
4-stroke turbocharged
150
Long-distance touring, comfort
How has the Rotax engine technology evolved over the years?
What is the future of Rotax engines in Ski-Doo?
Frequently Asked Questions
Can I put a Rotax engine in an older Ski-Doo?
Are Rotax engines expensive to repair?
Do Rotax engines require special oil?
How long do Rotax engines last?
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