Skip advert
Advertisement

Lexus GS450h

Cutting-edge hybrid technology promises more than it delivers

While Infiniti is just beginning to establish itself in the UK, Lexus has been a feature of the automotive landscape here for 20 years. The GS name dates from 1993, and thanks to conservative styling – which has changed little since the second-generation executive model was launched in 1997 – the car is a familiar sight. 

Advertisement - Article continues below

The GS 450h was the world’s first rear-wheel-drive hybrid sports saloon, but its styling  doesn’t reflect the futuristic technology lurking beneath the skin. While it’s less fussy than the Infiniti, the GS appears dated and uninspiring – a criticism that can also be levelled at the cabin.

The dashboard, in particular, looks old-fashioned. As with its rival here, the build quality is faultless, while the big buttons on the centre console and touchscreen monitor are easy to use. However, aside from the crystal blue backlit dials, it’s not very special from behind the wheel. The compromised driving position only adds to this feeling – you can’t adjust the seat low enough and rake adjustment on the wheel is at an acute angle.

Rear legroom is tighter than in the Infiniti, and the fact the batteries are stored behind the rear bench results in a short boot that is 120 litres smaller than its rival’s. The challenge of packaging the hybrid drivetrain also means the fuel tank is 15 litres smaller.  

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

Tucson

2019 Hyundai

Tucson

47,244 milesAutomaticDiesel1.6L

Cash £13,200
View Tucson
Crossland

2024 Vauxhall

Crossland

27,430 milesAutomaticPetrol1.2L

Cash £11,999
View Crossland
Kodiaq

2021 Skoda

Kodiaq

75,738 milesAutomaticPetrol2.0L

Cash £18,890
View Kodiaq
Ioniq 6

2025 Hyundai

Ioniq 6

15,276 milesAutomaticElectric

Cash £23,991
View Ioniq 6

Under the bonnet, the 292bhp 3.5-litre V6 petrol engine is boosted by an electric motor to give a total output of 341bhp. Consequently, at the test track, the Lexus sprinted from 0-60mph in exactly six seconds – that’s two seconds faster than the Infiniti – and was quicker to respond in kickdown. However, under hard acceleration, the CVT transmission keeps the revs high for long periods, which contrasts with the Infiniti diesel’s torquey refinement.

Around town, you get the benefit of silent zero-emissions  driving, but anything other than very light throttle inputs will see the petrol engine cut back in. At cruising speeds, refinement is decent, although the suspension fails to iron out imperfections,and the ride is fidgety on all but the smoothest of surfaces.

The GS struggles in corners, too. Body control is poor and the slow steering is completely devoid of feedback. And as the brake pedal has an artificial feel, it’s hard to scrub off speed progressively, as the regenerative braking set-up is uneven in its resistance. Add these dynamic compromises to the lower kit tally, higher price and inferior economy, and the GS clearly has its work cut out to beat the Infiniti.

Details

Chart position: 2
WHY: With its petrol-electric drivetrain and CVT gearbox, the GS 450h is unique in this sector. We see if the SE-L version can attract buyers looking away from German marques.

Skip advert
Advertisement

New & used car deals

Hyundai Tucson

Hyundai Tucson

RRP £29,840Avg. savings £6,068 off RRP*Used from £11,851
Omoda 5

Omoda 5

RRP £24,040Avg. savings £1,539 off RRP*Used from £18,390
Toyota Yaris Cross
Volkswagen Polo

Volkswagen Polo

RRP £15,270Avg. savings £2,398 off RRP*Used from £6,460
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Jaguar Type 01: first pictures of EV’s striking interior revealed
Jaguar Type 01 - interior and exterior

New Jaguar Type 01: first pictures of EV’s striking interior revealed

The drip-feed of Jaguar’s controversial new electric GT continues with the first images of its bold four-seat cabin
News
12 Aug 2026
How to clean your car during a hosepipe ban
Washing your car during a hosepipe ban - header image

How to clean your car during a hosepipe ban

With many water companies having issued bans on using hosepipes, we look at alternatives that can keep your motor looking good in the heatwave
Tips & advice
13 Aug 2026
New MoT test rules require a photo of every car
Protyre area manager Simon Hall inspecting a Vauxhall Corsa's tyre

New MoT test rules require a photo of every car

The Photos at Test feature has been rolled out nationwide to combat MoT test fraud
News
11 Aug 2026