Skip advert
Advertisement

Cadillac STS 4.6 V8

After two failed attempts at grabbing a slice of the UK car market, Cadillac bosses have accepted that there is no future in trumpeting the past when developing new products for British car buyers.

Big and bold, Caddy's flagship for Europe is a muscular, but not muscle-bound, rival to the usual German exec suspects. The cabin lacks the class and finish of rivals, and the STS is more likely to be considered by new Lexus GS buyers. The V8 will be well equipped - although second-hand values could still prove to be a real deterrent.

Advertisement - Article continues below

After two failed attempts at grabbing a slice of the UK car market, Cadillac bosses have accepted that there is no future in trumpeting the past when developing new products for British car buyers.

Despite the badge's history, there is a perception that the US manufacturer is unable to produce a genuine BMW and Mercedes rival. But that has not put it off - which is why engineers have spent the past four years on a development mission, thrashing a prototype of the STS saloon across Europe.

Cadillac now believes it has a model capable of exorcising memories of unwieldy and poorly finished cars such as the front-wheel-drive Seville - and is ready to launch its flagship on this side of the Atlantic. Expectation is high - and Auto Express took to the wheel of the STS to see if it is justified.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

3 Series

2025 BMW

3 Series

20,335 milesAutomaticPetrol3.0L

Cash £41,990
View 3 Series
ZS EV

2023 MG

ZS EV

61,358 milesAutomaticElectric

Cash £11,960
View ZS EV
Niro

2024 Kia

Niro

23,525 milesAutomaticPetrol1.6L

Cash £19,330
View Niro
A-Class Saloon

2021 Mercedes

A-Class Saloon

31,899 milesAutomaticPetrol1.3L

Cash £16,670
View A-Class Saloon

The car is certainly substantial. Slab-sided in profile, the saloon is six inches longer than BMW's 5-Series, plus wider and lower. But Cadillac has worked hard to ditch the Yank tank image. Chrome trim - beloved in the US - is absent and the fussy and cluttered tail looks less messy in dark, solid colours.

Inside, the leather and wood dash blends well with the console "infotainment" unit and air-con buttons. However, fit and finish is not on a par with the Audi A6 or new Lexus GS. Details such as the over-sensitive electric steering wheel adjustment irritate, and the door pockets have a naff, rubbery finish.

The big Caddy bristles with hi-tech gizmos, from adaptive radar-controlled cruise control to a head-up instrument display. On the road, the technology is not intrusive, and the STS feels more compact than its bulk implies.

Powered by a 325bhp 4.6-litre V8, the rear-wheel-drive machine has a five-speed auto gearbox, as well as uprated steering, suspension and braking, which combine to make it surprisingly nimble.

Downsides include a lack of chassis feedback in sweeping corners, plus a tendency to fidget over uneven surfaces in sports mode. The V8's likely £42,500 price sounds a lot, but this car shows US engineers have listened, learned and applied important lessons.

Skip advert
Advertisement

More reviews

New & used car deals

Volkswagen Polo

Volkswagen Polo

RRP £15,270Avg. savings £3,278 off RRP*Used from £7,500
Audi A3

Audi A3

RRP £26,310Avg. savings £2,449 off RRP*Used from £10,080
Dacia Spring

Dacia Spring

RRP £11,990Avg. savings £703 off RRP*Used from £10,000
Renault Clio

Renault Clio

RRP £16,175Avg. savings £4,168 off RRP*Used from £7,450
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Future of Chery: fast-growing Chinese brand plans four new cars
Chery range

Future of Chery: fast-growing Chinese brand plans four new cars

Four new models to include an EV and a new Tiggo SUV, says UK country manager Farrell Hsu
News
11 Sep 2026
New Volvo XC40 facelift: popular SUV gets Range Rover-esque makeover
Volvo XC40 - Ellis Hyde front

New Volvo XC40 facelift: popular SUV gets Range Rover-esque makeover

The pure-electric Volvo EX40 and EC40 coupe-SUV have also been updated again, now delivering up to 359 miles of range
News
10 Sep 2026
La Cinquecento’s Fiat 500 Scattante is an Italian icon made in Britain
La Cinquecento’s 500 Scattante

La Cinquecento’s Fiat 500 Scattante is an Italian icon made in Britain

This remastered version of the original Fiat 500 was created by new outfit La Cinquecento, which plans to build only a handful each year
News
11 Sep 2026