Product group tests

Koch Chemie Rkb review

By:Auto Express team

10 Aug 2016

.polaris__post-meta--date { display: none; } .polaris__post-meta--date.no-script { display: block; padding-left: 45px } 10 Aug 2016

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.

Accessories & tyres

Kia Sportage

.imgHideOnJavaScriptDisabled_40599v15miob2q3w { display: none !important; }

RRP £28,065Avg. savings £4,049 off RRP*Used from £12,495

New Kia Sportage Used Kia Sportage

Volkswagen Tiguan

.imgHideOnJavaScriptDisabled_40599v15miob2q3x { display: none !important; }

Volkswagen Tiguan

RRP £38,030Avg. savings £3,283 off RRP*Used from £25,726

New Volkswagen Tiguan Used Volkswagen Tiguan

Dacia Spring

.imgHideOnJavaScriptDisabled_40599v15miob2q3y { display: none !important; }

RRP £14,995Avg. savings £3,158 off RRP*

New Dacia Spring

Vauxhall Corsa

.imgHideOnJavaScriptDisabled_40599v15miob2q3z { display: none !important; }

RRP £19,690Avg. savings £5,321 off RRP*Used from £11,499

New Vauxhall Corsa Used Vauxhall Corsa

* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP

Most Popular

Tom Motability opinion

.imgHideOnJavaScriptDisabled_40599v15miob2q40 { display: none !important; }

Motability’s definition of a ‘premium’ car is outdated, and here’s why

Our consumer reporter believes Motability needs to get with the times and reasses what it classifies as a premium car

Opinion

28 Nov 2025

Suzuki e Vitara vs Ford Puma Gen-E - front tracking

.imgHideOnJavaScriptDisabled_40599v15miob2q41 { display: none !important; }

Suzuki e Vitara vs Ford Puma Gen-E: new EV aims to tame Ford’s big cat

The e Vitara is Suzuki’s first EV. How does the newcomer shape up against the electric version of Ford’s best-selling Puma?

Car group tests

29 Nov 2025

Car Audio test - VW driving

.imgHideOnJavaScriptDisabled_40599v15miob2q42 { display: none !important; }

Exclusive car stereo test: are premium car audio upgrades worth it?

We listen to what the experts at Richer Sounds think about car companies' regular and upgraded stereo set-ups

Features

1 Dec 2025