A drop-top to rival BMW‘s 3-series convertible and Audi A5 cabriolet is Lexus‘s latest expansion, although the ISC won’t have huge fleet appeal as it’s here as a 2.5-litre petrol engine with CO2 of 219g/km.

Every panel from the saloon bar the bonnet, headlights, door handles and mirrors is redesigned for the three-piece hard-top. The roof only works at rest and needs both doors shut and the luggage cover slotted in, but it does come down in a decent 21.0secs. Lexus claims class-leading roof-down boot space (discounting the A5’s fabric roof), but the space is a long thin strip. Anything square simply won’t fit.

The auto-only ISC is a good looking – especially roof down – cruiser rather than sports car, and the costs aren’t too favourable for business. An 88.5p per mile figure isn’t helped by a predicted retained value from KwikCarcost of just 31.7%, which is poor for a prestige brand.

The ISC makes a decent case on its looks, but the German premium brands will feel they have it covered in terms of driving, cost of ownership and practicality.

Lexus IS250C SE-L auto
P11D price £30,080
Model price range £35,550-£43,250
Fuel consumption 30.4mpg
CO2 (tax) 219g/km (31%)
BIK 20/40% per month £202/£404
Service interval 10,000miles
Insurance group 17
Warranty 3yrs/60,000mls
Boot space 235/583 litres
Engine size/power 2499cc/205PS
Top speed/0-62mph 130mph/9.0sec
On sale June 2009
Score 6/10
Verdict Hits the spot for looks but doesn't
back-up early promise in terms
of ownership proposition.