Subaru’s sixth-generation Forester introduces a major leap forward in hybrid technology with its next-generation strong hybrid e-Boxer system. While the company has previously dabbled with mild hybrids, this is the first time Australian buyers get access to what Subaru is calling a “super hybrid” — a powertrain designed not just for lower fuel consumption, but to enhance performance, comfort and all-terrain capability.
Let’s unpack how the new hybrid system works and why it matters, especially for fleet buyers considering a mid-size SUV with genuine all-wheel-drive (AWD) credentials.
It Starts with a Subaru Boxer Engine
At the heart of the system is Subaru’s familiar 2.5-litre horizontally opposed Boxer engine, now tuned for hybrid duty. The layout of the Boxer — with its cylinders laid flat in opposing directions — offers natural balance, minimal vibration and a low centre of gravity. These traits help improve ride quality and stability, which are essential when mixing electric and petrol propulsion.
The engine operates using the Atkinson/Miller cycle, a more efficient combustion method that reduces energy loss and increases thermal efficiency — the key to squeezing more kilometres from every litre of fuel.
Two Motors, One Smart System
Subaru’s strong hybrid setup includes not one, but two electric motors working in harmony with the petrol engine. Here’s how it breaks down:
- Motor Generator 1 (MG1): This motor starts the petrol engine and charges the hybrid battery by converting excess engine power into electricity when needed.
- Motor Generator 2 (MG2): This is the real workhorse. MG2 provides drive power to the wheels, offers regenerative braking (recapturing energy during deceleration), and assists the engine under load – for example, when towing or climbing a hill.
Together, these motors enable seamless switching between petrol, electric, or combined drive modes depending on the terrain, acceleration demand, and battery charge.
When pulling away from a stop or creeping through traffic, the Forester can move under electric power alone. As speed increases, the system blends in the petrol engine, with the transition barely perceptible to the driver. Under heavy acceleration or while towing, both the engine and MG2 work together for peak performance.
145kW Combined Power – More Than a Number
The new e-Boxer system delivers 145kW of total system output – a 32% increase over the outgoing mild hybrid Forester. That’s significant, especially for those using the vehicle in regional or semi-rural applications where overtaking ability and towing capacity matter.
And unlike many other hybrid SUVs, the Forester maintains Subaru’s symmetrical AWD system — which is mechanically linked and always active. The instant torque from MG2 also means you get better grip on loose or slippery surfaces, making this a true hybrid SUV built for Australian roads.
Range and Efficiency
Despite being a full-time AWD vehicle, the Forester Hybrid sips just 6.2L/100km on the combined cycle. It’s not class-leading in outright fuel economy, but thanks to a 63-litre fuel tank — now standard across all variants — it delivers a theoretical range of over 1,000km between refuels.
For fleet operators in regional areas, or drivers who don’t want to stop every few days, that’s a huge win. It also simplifies fuel logistics for operations that regularly travel long distances.
Regeneration and Smart Features
Like most hybrids, the Forester uses regenerative braking to recharge the 1.1kWh lithium-ion battery while driving. Special paddles on the steering wheel let the driver control the level of regen, adding another layer of vehicle control and personalisation.
The system also includes what Subaru calls Motor Assist. When climbing hills, towing, or accelerating, MG2 kicks in to reduce engine load — improving fuel economy and responsiveness at the same time.
Why It Works for Fleet Buyers
This isn’t a hybrid designed just for the city. Subaru’s hybrid system enhances what the brand does best: all-terrain stability, safe handling, and reliability. The fact that it’s smoother and quieter is just icing on the cake. Add in reduced fuel use and over 1,000km of range per tank, and you’ve got a genuine upgrade in real-world performance — not just a greener badge.
For Fleet Managers, the new e-Boxer hybrid system in the Forester represents a mature, capable evolution of hybrid technology that’s ready to work hard and travel far.
