What Is the MultiAir System, Briefly?

The origin of MultiAir technology is based on the work of engineers at the automotive giant Fiat (now known as the Stellantis Group). Its goal was to produce more efficient engines.

It first hit the road in 2009. It attracted great interest in its time. It was deemed worthy of the year's best new engine award for its efficiency and eco-friendliness.

Without wearing you out, let me briefly explain the engineering behind it;

In normal vehicles, that is, in conventional engines, the intake valves allow air into the engine. The throttle body is also part of this. In the MultiAir system, however, these valves work with an electro-hydraulic system. This both prevents the delay caused by the throttle body and, by being controlled by the ECU, makes it more controlled when air is let in and out. In short, it makes the job easier. Put simply, it's an oil-dependent system controlled by the ECU. But here's the thing: something as seemingly simple as oil becomes vitally important in this system.

It has advantages like faster response, higher horsepower and torque (around +10%), fuel efficiency and low emissions. Its downsides can be a bit annoying, though. They are as follows: in this engine, oil viscosity, composition and certifications matter a great deal. After all, it's an oil-dependent system. If it doesn't get proper maintenance and falls into unfamiliar hands, it can really hurt you. Also, since this system is more complicated and complex, it has more sensors and mechanics. Workmanship is harder and more costly. We could say, “God forbid the MultiAir breaks.”

In short;

This technology is one of the finest examples of getting high performance from small-displacement engines and doing so in an eco-friendly way! But it's worth saying: be careful.