Skip advert
Advertisement

Bilt-Hamber Auto-Clay Medium clay bar

Great new clay from test winner fills the gap between its 'Regular' and 'Soft' options.

Bilt-Hamber Auto-Clay Medium clay bar

Price: £10.95 (200g)
Contact: 01277 658899, www.bilthamber.com

Winter weather means filthy bodywork. But while dirty water and mud can be easily shifted with a bucket and sponge, to remove contaminants such as brake dust before polishing you need a clay bar.

Bilt-Hamber’s Auto-Clay is our current favourite, and a new Medium smoothing clay bar has been added to the range to slot in between the Regular (our 2011 Best Buy) and Soft (for more frequent use) versions.

Advertisement - Article continues below

This bar is presented in a handy storage case, which prevents the clay from drying out and ensures it lasts longer.

We tore off a 15g chunk from the 200g bar, then set about our panel. The Bilt-Hamber doesn’t require a dedicated lubricant, just lots of water, so we kept the bonnet soaking wet while rubbing the clay back and forth. We then dried the bodywork with a microfibre cloth.

Afterwards, we ran a finger over the treated and untreated panels, and were impressed at how smooth the Auto-Clay had left our car. As you don’t need a lubricant, the £11 price equates to 55p per 10g of clay, so the Bilt-Hamber Medium is great value.

Verdict

Rating: ★★★★
What is it?
Bilt-Hamber's latest clay bridges the gap in its lineup between the Regular and Soft clay bars.
Problems?
Not as aggressive as rivals, no lubricant included.
Why buy?
Only need to use water to apply, great at shifting grime, top value for money.

Skip advert
Advertisement

New & used car deals

Nissan Juke

Nissan Juke

RRP £19,785Avg. savings £4,638 off RRP*Used from £8,995
Skoda Kodiaq

Skoda Kodiaq

RRP £39,025Avg. savings £3,590 off RRP*Used from £13,495
Volkswagen Tiguan

Volkswagen Tiguan

RRP £38,030Avg. savings £3,560 off RRP*Used from £20,799
Volkswagen Polo

Volkswagen Polo

RRP £15,255Avg. savings £1,912 off RRP*Used from £7,299
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

It’s clear that all buyers want are affordable and desirable cars
Affordable cars - opinion

It’s clear that all buyers want are affordable and desirable cars

Manufacturers like BYD, Jaecoo and Renault are building affordable cars people actually want to buy, and it’s backed up by sales data
Opinion
5 Jan 2026
Cheap Alibaba classic cars could be the answer for enthusiasts on a budget
Alibaba bodyshell scan - opinion, header image

Cheap Alibaba classic cars could be the answer for enthusiasts on a budget

Alastair Crooks thinks replica classic cars based on reproduced bodyshells could be the next big thing, if safety barriers can be overcome
Opinion
3 Jan 2026
New electric Mercedes S-Class will replace the EQS… eventually
Mercedes EQS - front tracking

New electric Mercedes S-Class will replace the EQS… eventually

The next iteration of the S-Class will give its affluent customers the choice of combustion or electric power
News
5 Jan 2026