Koch Chemie MZR Mehrzweckreiniger is a highly effective alkaline multi-purpose cleaner built for the demanding cleaning requirements of automotive, industrial, and commercial environments. The powerful formula delivers deep penetration and removal of oil, grease, ink, soot, nicotine staining, and heavy road grime from a wide range of surfaces including plastics, textiles, upholstery, machinery, and hard surfaces.

Outstanding dirt-dissolving and carrying capacity makes it effective on heavily contaminated surfaces where standard cleaners fall short. Works across interior upholstery, exterior surfaces, engine components, shop floors, and industrial equipment. Leaves a fresh, pleasant scent after use, which is a welcome bonus when working in enclosed spaces. Highly concentrated for cost-effective dilution across different cleaning intensities.

If you are looking for a professional alkaline multi-purpose cleaner for automotive and industrial use, a Koch Chemie APC that handles oil, grease, soot, and heavy contamination across multiple surface types, or a versatile concentrated cleaner for a detail shop or commercial cleaning operation, MZR is a dependable all-rounder from one of Europe's most trusted detailing chemistry brands. Available in 1L and 5L.

Koch Chemie MZR Dilution & Usage

Mehrzweckreiniger (MZR) — German for "multi-purpose cleaner" — is Koch Chemie's interior-focused APC. Gentler than Green Star, ideal for fabric, plastics, trim, and headliners.

• Interior fabric / trim (light): 1:10 dilution
• Headliners: 1:20 (always lighter on headliners — overspray drips)
• General interior degreasing: 1:5
• pH: Slightly alkaline — gentler than Green Star for interior use.

Frequently Asked Questions

Koch Chemie MZR vs Green Star — which should I use?

Use MZR on interiors (fabric, plastics, headliners, trim). It's gentler and designed for surfaces you don't rinse. Use Green Star for engine bays, wheel wells, floors, and anywhere you can rinse thoroughly. Green Star is alkaline enough to damage fabric at the wrong dilution; MZR is not.

Can Koch Chemie MZR be used on headliners?

Yes — it's one of the safer APCs for headliners. Dilute 1:20 (more water than usual), apply with a spray bottle, agitate gently with a soft interior brush, blot (don't rub — rubbing fuzz headliners). Let air-dry fully before closing the car.

Is Koch Chemie MZR ready-to-use or do I need to dilute?

MZR is a concentrate — always dilute before use. 1:5 for heavy interior degreasing, 1:10 for general, 1:20 for headliners and delicate fabric.

Buying for a shop? See our Koch Chemie wholesale program for B2B pricing on this and the full Koch Chemie lineup.