Petrol power to live on! 2025 BMW X3 'G45' will arrive with combustion engines and plug-in hybrid powertrains to rival Audi Q5, Lexus NX and Mercedes GLC as Neue Klasse X flies electric car flag

The next-gen BMW X3 will keep combustion-engined based powertrains as BMW retains a split strategy to keep market share on both electric and ICE fronts. 

The fourth-gen ‘G45’ X3 will replace the existing G01 later this year with a likely Australian launch in 2025. Like the third-gen BMW X5, the fourth-gen X3 will share most of its underpinnings with the existing car.

That’s because BMW is pouring much of its development time into the Neue Klasse (or New Class, in english) electric platform which will underpin an all-new iX3 replacement in 2026.

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Pictured here in heavy camouflage, it’s obvious how the shape of BMW’s new X3 has changed – there’s a more imposing and wider grille, higher bonnet line and X1-like sloping roof for the Audi Q5, Lexus NX and Mercedes GLC rival.

The car itself is 42mm longer (4755mm) and 23mm wider (1920mm) in body and track than the previous model. The new X3’s roof line is also a little lower, at 1660mm compared to 1676mm, though it rides on the same 2865mm wheelbase as before.

That’s because the new X3's underpinnings are fundamentally the same, with double-wishbone front suspension and a multi-link configuration at the rear. More rigid front roll-bar and rear suspension mounting points have been engineered for the new model. 

BMW's next-gen X3 adopts a sloping roof line like the current X1.

There’s a new electric architecture, too, presumably improving the functionality of the mild-hybrid petrol and diesel four-cylinder xDrive20i and xDrive20d versions that will be offered in the UK – expect the petrol to arrive in Australia. 

A brace of plug-in hybrids, the four-cylinder based xDrive30e and six-pot M50 xDrive (likely to be the only option with the ‘B58’ engine), will be offered in the UK as well. 

The plug-in hybrids feature BMW’s newer 18.9kWh lithium-ion battery pack and tweaked gearbox-mounted motor. Expect improvements to the X3 PHEV’s 215kW power output and 60km electric-only driving range figure. 

Due here in 2025, the BMW X3 will offer a range of hybrid and combustion powertrains.

Inside, the X3 will feature BMW’s latest Android-based multimedia system with 14.9-inch touchscreen and iDrive rotary controller retained. The steering wheel fitted to these prototypes is the same found in the latest 5 Series sedan and wagon. There’s no word yet on a full-fat M version of the new X3, but expect one soon.

As for the new ‘iX3’, it’s likely BMW will adopt new naming conventions for the product versions of its Neue Klasse concepts to reduce future confusion. The fourth-gen X3 will launch globally in late 2024 with an Australian release likely to follow in 2025.