Glass’s experts give the lowdown on what’s selling and what’s sitting.

Going up

Petrol cars: Values are holding up slightly better than on diesel for 2.2-litre cars and below. Petrols are even becoming rare on some cars due to take-up of diesel.

Black paint: Premiums are increasing further for cars with black paint, and it can be worth up to £1,000 on a £25,000 prestige model.

BMW M5: Not the all-singing new V10 model, but the previous-generation V8 – scarce, a modern classic and value for money.

Going down

Basic wheels: Who wants standard rims which don’t fill out the wheelarches? There’s no substitute for inches and bigger alloys from the options list are prized.

Superfluous extras: ‘Exclusive’ paint and leather trims, coloured headlining, ‘special’ wood trim, etc... No thanks – none retain any value on a used car.

No. V5 document: If this is missing, then you can kiss goodbye to selling the car for a fair price. Uncertainty and hassle is a buyer’s worst nightmare.