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

Vauxhall Corsa

Vauxhall Corsa

RRP £19,870Avg. savings £4,822 off RRP*Used from £8,777
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £2,785 off RRP*Used from £10,000
Toyota Yaris Cross
Omoda 5

Omoda 5

RRP £24,040Avg. savings £1,535 off RRP*Used from £18,790
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Land Rover Defender updates suggest 'if it ain't broke...' approach
2027 Land Rover (camouflaged) - front

New Land Rover Defender updates suggest 'if it ain't broke...' approach

Land Rover isn’t fixing what isn’t broken with its hugely popular Defender
News
11 May 2026
Volkswagen T-Roc vs Toyota C-HR: two popular small SUVs, one winner
Volkswagen T-Roc and Toyota C-HR - front tracking

Volkswagen T-Roc vs Toyota C-HR: two popular small SUVs, one winner

The second-generation VW T-Roc has landed to find the Toyota C-HR waiting to challenge it. Which SUV comes out on top?
Car group tests
9 May 2026
Plug-in hybrids outpace EVs on battery degradation due to varied use patterns
Electric car charging

Plug-in hybrids outpace EVs on battery degradation due to varied use patterns

While average battery state of health is roughly the same for EVs and PHEVs, varied use cases create more variance for hybrids
News
11 May 2026