Mercedes-Benz GLC-Class vs Lexus RX350H

What's the difference?

Let’s make one thing clear from the very beginning - this new Mercedes-AMG GLC63 S E Performance is technically superior to the model it replaces. Whether it’s actually better or not, is the real question at the heart of the matter.

Why? Because, like the C63 sedan stablemate, AMG has opted to replace the previous model’s 4.0-litre twin-turbo V8 engine with a new 2.0-litre four-cylinder hybrid powertrain. It was a move brought about in part because of increasingly stricter emissions standards in Europe, but also ties-in with the German firm’s success in modern Formula One racing.

While the new hybrid system offers more power, more torque and better fuel economy, as the lukewarm response to the C63 has demonstrated, the hard reality for AMG is that its buyers associate it with V8 and even V12 engines. That emotional pull is hard to replace with logic, even if the new model offers technical superiority.

But how does the new powertrain suit the GLC63 - is it just technically better or is it holistically improved?

The Lexus RX holds broad appeal. Families with a bit of money that don’t need a third seating row, older people who love the brand and want a bit of space, and people stepping up into the premium marque from a mainstream brand are all potential buyers. 

The fifth-generation version that launched in early 2023 proved to be a significant step up over the previous RX.

Lexus made it more dynamically capable, and there’s been a sharpened focus on refinement, value-for-money and safety credentials. 

We spent three weeks getting to know the most affordable RX - the entry-grade Lexus RX350h Luxury two-wheel drive - to see whether it’s worth putting it at the top of your premium family SUV shopping list.