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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryRetail & CommerceAuto Repair ShopsLaupen ZhQuality by Karel Koch
Quality by Karel Koch Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Quality by Karel Koch is a garage and workshop for luxury and sports cars, providing engine and transmission repairs, electronic diagnostics and brake and maintenance services. Other offerings include installations and retrofits (infotainment, cameras), motorsport and classic car work, pick-up/drop-off service and a mobile sports-car service.

AI-generated
Offering

Products & services

Industry:Auto Repair Shops
✓ Offered9
Workshop and repair service for sports and luxury vehicles
Repairs, maintenance/service, MFK readiness and engine and transmission repairs for premium vehicles; plus brake service, fault diagnosis and general vehicle maintenance.
Installation, conversion and retrofitting
DAB+ installations, Apple CarPlay and Android Auto, parking camera retrofit, as well as individual vehicle conversions for sports and premium vehicles.
Engine and transmission overhaul
Engine repairs and transmission overhauls for luxury and premium vehicles, specializing in brands such as Aston Martin, Porsche, Lamborghini and Bentley.
Fault diagnosis and electronics service
Precise fault diagnosis, устран of electronic problems, and diagnostic and repair work on the engine, transmission and electronics.
Brake service
Brake replacement and brake service with drilled brake discs, four-piston brake systems or ceramic brakes for vehicles used for sport.
Glass replacement
Replacement of windshields, side windows and rear windows with original-equipment glass, including invoicing via insurance for stone chips or stress cracks.
Restoration and build of motorsport and classic vehicles
Repair and build of motorsport vehicles as well as restoration of classic cars and racing vehicles.
Mobile sports car service
Mobile service on site at home, at the workplace or at the storage location; maintenance work and minor repairs with diagnostic equipment and under certain space and power conditions.
Consulting and pick-up and delivery service
Consulting on maintenance schedules and technical questions, as well as pick-up and delivery service and provision of replacement cars.
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4.2/5

Quality by Karel Koch

Trust & reputation

ranQ Trust Score of Quality by Karel Koch: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Quality by Karel Koch scores 85.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.88.324%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.77.410%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
Quality by Karel Koch scores 63.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.64.612%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Quality by Karel Koch scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Quality by Karel Koch scores 20.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Quality by Karel Koch reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 20 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 20 reviews across all connected sources

Sources
GGoogle520
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Hauptstrasse 36b
8637 Laupen Zh
Opening hours
Mon
07:30 - 18:00
Tue
07:30 - 18:00
Wed
07:30 - 18:00
Thu
07:30 - 18:00
Fri
07:30 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-146.909.140
Founded
2021 · 5 years
Last commercial register change
February 17, 2021
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
67.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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