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

Taycan

2024 Porsche

Taycan

43,200 milesAutomaticElectric

Cash £38,450
View Taycan
Kuga

2020 Ford

Kuga

46,147 milesAutomaticDiesel2.0L

Cash £15,430
View Kuga
E-2008

2025 Peugeot

E-2008

11,571 milesAutomaticElectric

Cash £17,550
View E-2008
e-Up

2022 Volkswagen

e-Up

25,036 milesAutomaticElectric

Cash £10,530
View e-Up

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

Toyota Yaris Cross
Dacia Spring

Dacia Spring

RRP £11,990Avg. savings £586 off RRP*Used from £9,495
Nissan Qashqai

Nissan Qashqai

RRP £27,435Avg. savings £5,987 off RRP*Used from £8,995
Renault Clio

Renault Clio

RRP £16,175Avg. savings £2,564 off RRP*Used from £7,500
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Ford Focus: full details on the iconic name’s SUV return
Ford Focus exclusive image

New Ford Focus: full details on the iconic name’s SUV return

An all-new Ford Focus is set to make a comeback and our exclusive image previews how it could look
News
10 Aug 2026
Long-term test: Volvo EX90 Ultra Twin Motor Performance
Volvo EX90 Ultra Twin Motor Performance - family header

Long-term test: Volvo EX90 Ultra Twin Motor Performance

First report: Range-topping version of flagship SUV joins our fleet and is fast becoming a family favourite
Long-term tests
9 Aug 2026
Car Deal of the Day: Cupra Formentor is a sporty SUV for under £200 a month
Cupra Formentor e-Hybrid - front cornering

Car Deal of the Day: Cupra Formentor is a sporty SUV for under £200 a month

The Formentor is a family SUV that looks great, is good to drive and offers exceptional value. It’s our Deal of the Day for 9 August
News
9 Aug 2026