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Alkaline interior and special cleaner for heavy cabin contamination

Koch-Chemie Mzr Mehrzweckreiniger Interior Cleaner

Koch-Chemie
Sale price From £10.99
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Highly effective alkaline intensive cleaner for cars, industrial and building cleaning.

  • Removes oily interior grime
  • Breaks down grease
  • Cleans nicotine staining
  • Works on suitable textiles
  • Useful on upholstery
  • Cleans alkali-resistant plastics
  • Strong professional dilution range
  • Ideal for heavy interior cleaning
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  • Alkaline Interior Cleaner
  • pH 12.5 Formula
  • Dilution 1:5 To 1:50
  • Heavy Dirt Removal
  • Nicotine Stain Cleaning

The Drivers HQ

Expert Notes

Koch-Chemie Mehrzweckreiniger Mzr is the stronger interior cleaner in the Koch-Chemie range and should be treated as an intensive cleaner, not a mild daily cabin wipe-down product. It is designed for heavier contamination such as oil, grease, ink, soot, nicotine and common road dirt on suitable alkali-resistant interior materials. The dilution range is wide, so the mix should be chosen around the surface and dirt level. Stronger dilutions are for severe dirt, while weaker dilutions are better for regular interior cleaning, upholstery and roof lining work. Mzr is especially useful on dirty plastics, carpets, upholstery and commercial interiors, but it must be removed properly with a damp cloth, microfibre mitt or wet and dry vacuum. For delicate materials, leather, Alcantara, displays and sensitive trims, use a more suitable Koch-Chemie interior cleaner instead.
Simon Hole Simon HoleFounder, The Drivers HQ

Perfect For / Suitable Surfaces

  • Alkali-resistant plastics
  • Carpets
  • Upholstery
  • Vehicle roof linings
  • Interior trim with testing
  • Commercial vehicle interiors
  • Door shuts with testing

Do not use on hot surfaces and do not allow Mzr to dry. Avoid leather, Alcantara, suede, nubuck, touchscreens, instrument displays, piano black trim, clear plastics, delicate coatings, fresh repairs and unknown sensitive surfaces unless suitability has been confirmed.

Technical Specifications

Product Type
Interior And Special Cleaner
Brand
Koch-Chemie
Product Name
Mehrzweckreiniger
Product Code
Mzr
Formula Type
Highly Effective Alkaline Intensive Cleaner
pH Value
12.5
Primary Use
Heavy Interior, Textile, Plastic And Special Cleaning
Dilution Range
1:5 To 1:50
Suitable Surfaces
Alkali-Resistant Plastics, Carpets, Upholstery, Roof Linings And Machinery
Contamination Removed
Oil, Grease, Ink, Soot, Nicotine And Road Dirt
Scent
Pleasant Fragrance
Approval
Daimler Approved
Application Method
Spray Bottle, Microfibre Mitt, Brush, Cloth Or Extraction Equipment
Residue Removal
Damp Cloth Or Wet/Dry Vacuum
Spray Extraction Use
Add Koch-Chemie Kocentschäumer Defoamer Where Required
Hot Surface Use
Not Suitable
Drying On Surface
Not Suitable
Oil Separator Suitability
Not Quick-Separating
Official Containers
1L, 11kg, 21kg And 225kg
1L Article Number
86001
11kg Article Number
86011
21kg Article Number
86021
225kg Article Number
86225
Professional Use
Yes

Choosing dilution

  1. Use 1:5 for heavy contamination.
  2. Use 1:10 to 1:20 for general heavier interior cleaning.
  3. Use 1:30 to 1:50 for lighter cleaning on suitable surfaces.
  4. Always test the surface before full use.
  5. Mix with clean water in a suitable spray bottle.

Interior plastic cleaning

  1. Apply diluted Mzr to a cloth, brush or microfibre mitt.
  2. Work one small area at a time.
  3. Agitate lightly where dirt is built up.
  4. Do not allow the cleaner to dry.
  5. Wipe residue away with a damp microfibre cloth.
  6. Dry the area with a clean towel.
  7. Inspect the finish before moving on.

Carpet and upholstery cleaning

  1. Vacuum loose dirt first.
  2. Apply the correct dilution to the fabric.
  3. Allow a short reaction time.
  4. Agitate with a suitable brush or microfibre mitt.
  5. Remove loosened dirt with a damp cloth or wet and dry vacuum.
  6. Use extraction equipment where suitable.
  7. Avoid over-wetting roof linings and sensitive fabrics.
  8. Allow the surface to dry fully.

Heavy interior contamination

  1. Use a stronger dilution only where the surface can tolerate it.
  2. Work in controlled sections.
  3. Use suitable brushes for textured plastics and fabric.
  4. Remove all residue after cleaning.
  5. Repeat carefully if contamination remains.
  6. Switch to a weaker dilution for final wiping if required.

Top Tip: Do not treat Mzr like a mild ready-to-use interior cleaner. Start with a weaker dilution, test first and remove the cleaner fully after use.

PerformanceBenefits

Breaks down oily contamination
Useful on smoker vehicles
Removes heavy interior grime
Wide dilution flexibility

Best Paired With

Frequently Asked Questions

Mzr is an alkaline interior and special cleaner for heavy contamination on suitable plastics, carpets, upholstery, roof linings and machinery.

No, it is a concentrate and should be diluted between 1:5 and 1:50 depending on dirt level and surface suitability.

Koch-Chemie lists Mehrzweckreiniger Mzr at pH 12.5.

Use the weakest dilution that works. 1:10 to 1:20 is a sensible starting range for heavier interior cleaning, with testing first.

Yes, Koch-Chemie lists carpets and upholstery as areas of use, but residue should be removed properly with a damp cloth or wet and dry vacuum.

Koch-Chemie lists vehicle roof linings, but use caution, avoid over-wetting and test first because headliners can be sensitive.

No, use a dedicated leather, textile or Alcantara-safe cleaner instead.

No, Koch-Chemie warns not to allow Mzr to dry.

Mzr is positioned as an interior and special cleaner for heavier cabin contamination, while Green Star is a broader alkaline universal cleaner often used for exterior, engine bay and workshop cleaning.

Mzr is a stronger alkaline intensive cleaner, while Pol Star is a gentler pH-neutral cleaner for textiles, leather and Alcantara.

Koch-Chemie officially lists 1L, 11kg, 21kg and 225kg containers.

HQ Suggests Tips & Insights

  1. Start with a weak dilution first.
  2. Test hidden areas before full use.
  3. Use stronger mixes only for heavy dirt.
  4. Do not let the product dry.
  5. Remove residue after cleaning.
  6. Avoid leather and Alcantara.
  7. Use care on roof linings.
  8. Use a wet vacuum on fabrics where suitable.
  9. Keep interior brushes separate from exterior brushes.
  10. Use Pol Star for more delicate interior materials.

The Brand

Koch-Chemie

Koch-Chemie began in Germany in 1968 when trained carpenter Hans Koch started developing his own polishing compounds after becoming dissatisfied with the vehicle care products available at the time. His interest in surface finishing became the foundation of the company, with the first Koch-Chemie products moving into serial production during the 1970s. The business has remained based in Unna, Germany since 1971 and has expanded from polishing into vehicle cleaning, preparation, car wash chemistry, workshop products and industrial cleaning.

That history still shows clearly in Koch-Chemie's paint correction range. Heavy Cut, Fine Cut and Micro Cut compounds are designed as defined stages of correction and refinement, supported by corresponding pads and preparation products rather than being treated as isolated bottles of polish.

A Detailing Range Built as a System

A Detailing Range Built as a System

Koch-Chemie approaches vehicle care as a complete chemical and process system. Its detailing catalogue covers pre-cleaners, wheel cleaners, foams, shampoos, fallout and tar removal, polishing compounds, sealants, interior cleaners, glass products and specialist treatments. Familiar products including Green Star, Pol Star, Heavy Cut H9.02, Fine Cut F6.01 and Micro Cut M3.02 each occupy a specific position within that process.

The company's ProductSystem takes this further by dividing its chemistry into ten application groups with individual colour codes. Product abbreviations and technical information are incorporated into the labelling so that users can identify what a product is designed to do and where it belongs within the wider system. This structured approach is one of the most identifiable characteristics of Koch-Chemie.

Developed and Produced in Unna

Developed and Produced in Unna

Koch-Chemie operates its own research and development department at its site in Unna, Germany. Formulations are tested for measurable properties including durability, gloss and hydrophobic behaviour, with development also taking material compatibility, regional conditions and professional working processes into account. The company works directly with the automotive industry, car wash operators and industrial customers when developing and refining its chemistry.

Production is also carried out in Unna, where Koch-Chemie mixes its formulations, fills and labels containers and distributes finished products. Its production operation works within DIN EN ISO 9001 quality management and DIN EN ISO 14001 environmental management systems. This combination of in-house development, manufacturing and a clearly defined product system is a substantial part of what separates Koch-Chemie from brands that primarily source and market third-party formulations.

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