Skip advert
Advertisement

Koch Chemie Rkb review

Koch Chemie Rkb
Overall Auto Express rating

3.0

Price: £22 Clay weight: 200g
Contact: www.reepgroup.co.uk

This German product’s full name is Reinigungsknete blau and it’s essentially a mild cleaning clay. It made steady rather than spectacular progress, but was clearly working and could be used with water and a bit of car shampoo as a lubricant. Comes in a plastic snap shut case with good instructions in English. But it’s the most expensive clay-only option.

Skip advert
Advertisement

New & used car deals

Vauxhall Corsa

Vauxhall Corsa

RRP £19,690Avg. savings £5,308 off RRP*Used from £10,999
Kia Sportage

Kia Sportage

RRP £28,065Avg. savings £3,266 off RRP*Used from £14,495
Nissan Juke

Nissan Juke

RRP £19,785Avg. savings £4,644 off RRP*Used from £9,295
Toyota Yaris Cross

Toyota Yaris Cross

RRP £27,245Avg. savings £2,529 off RRP*Used from £15,750
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Some Chinese car brands are doomed to disappear, warns Skoda boss
Skoda Kodiaq - front cornering

Some Chinese car brands are doomed to disappear, warns Skoda boss

Skoda’s sales and marketing boss warns “there will be a consolidation” of the number of Chinese car brands around
News
3 Feb 2026
New Kia EV1 electric city car on the way to rival the Renault Twingo
Kia EV1 - front (watermarked)

New Kia EV1 electric city car on the way to rival the Renault Twingo

Kia's design boss lifts the lid on plans for a Renault Twingo and Volkswagen ID. Lupo rival, and our exclusive images preview how the EV1 could look
News
2 Feb 2026
Meet Renault’s new SUV: a Dacia Duster but not as we know it…
Renault Duster - front

Meet Renault’s new SUV: a Dacia Duster but not as we know it…

Posher inside and out and with more headroom, welcome to the upside down world of the Indian Duster
News
26 Jan 2026