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

Leon Estate

2024 SEAT

Leon Estate

68,000 milesAutomaticPetrol1.4L

Cash £12,920
View Leon Estate
5-Door Hatch

2022 MINI

5-Door Hatch

21,565 milesAutomaticPetrol1.5L

Cash £15,320
View 5-Door Hatch
Kamiq

2023 Skoda

Kamiq

35,466 milesManualPetrol1.5L

Cash £15,019
View Kamiq
MG4 EV

2024 MG

MG4 EV

28,667 milesAutomaticElectric

Cash £13,912
View MG4 EV

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

Volkswagen Polo

Volkswagen Polo

RRP £15,270Avg. savings £1,925 off RRP*Used from £8,745
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £4,062 off RRP*Used from £10,000
Nissan Juke

Nissan Juke

RRP £21,290Avg. savings £4,614 off RRP*Used from £8,500
Skoda Kodiaq

Skoda Kodiaq

RRP £39,045Avg. savings £4,356 off RRP*Used from £10,850
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Citroen 2CV to return: a £13k EV city car honouring the iconic original
Citroen 2CV teaser

Citroen 2CV to return: a £13k EV city car honouring the iconic original

Citroen has finally confirmed the long-rumoured revival of its famous 2CV and our exclusive images show what it could look like
News
23 May 2026
Car Deal of the Day: California dreaming in a VW campervan for just £316 a month
Volkswagen California - front tracking

Car Deal of the Day: California dreaming in a VW campervan for just £316 a month

The VW California is the king of campers and looks royally good value in our Deal of the Day for 22 May
News
22 May 2026
New Volkswagen T-Roc Hybrid ride review: brand's first full-hybrid could have giant impact
Volkswagen T-Roc Hybrid - front

New Volkswagen T-Roc Hybrid ride review: brand's first full-hybrid could have giant impact

We get a taste of VW’s first full-hybrid system, coming to the Golf and T-Roc later this year
Road tests
21 May 2026