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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryRetail & CommerceAuto Repair ShopsWaltenschwilKoller + Amstutz AG
Koller + Amstutz AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Koller + Amstutz AG is the automotive industry, specifically the sale and maintenance of vehicles, in particular Nissan vehicles, as well as the provision of services such as car repairs and diagnostics.

AI-generated
Offering

Products & services

Industry:Auto Repair Shops
✓ Offered5
Service and Repairs
Service and repairs for Nissan vehicles, exhaust maintenance for diesel and petrol, air-conditioning service, preparation for MFK, claims handling with insurers and pick-up/drop-off service for maintenance orders.
Tyre Service and Accessories
Tyre fitting and balancing, storage of winter and summer wheels, tyre disposal as well as accessories and spare parts such as batteries, rims, snow chains, roof racks and tow hitches.
Financing
Financing offers for vehicles with leasing, purchase credit or cash credit via Nissan Finance, including flexible terms and monthly instalments adjustable to the budget.
New Vehicle Warranty and Assistance
Warranty services for new Nissan cars with new vehicle warranty, extension, towing, paint and anti-rust-through warranty, as well as Nissan Assistance Plus with breakdown assistance and a replacement vehicle.
AVIA Service Station
AVIA service station with unleaded petrol and diesel, payment with AVIA card, Reka-Check, MasterCard, Visa or cash; including reference to the AVIA card and its additional services.
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4.3/5

Koller + Amstutz AG

Trust & reputation

ranQ Trust Score of Koller + Amstutz AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 100% · As of October 2026

Koller + Amstutz AG scores 87.6 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.82.324%
  • 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.100.010%
  • 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%
Koller + Amstutz AG scores 85.5 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.100.012%
  • 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%
Koller + Amstutz AG 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%
Koller + Amstutz AG scores 7.0 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 35.4.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Koller + Amstutz AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 64 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 64 reviews across all connected sources

Sources
GGoogle4.764
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

April 24, 2018Media
Der Junior übernimmt
wohleranzeiger.ch
April 6, 2018Media
Nachfolge im Garagenbetrieb: Der Junior hat das Steuer übernommen
aargauerzeitung.ch

Knowledge

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Comparisons

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Location

Bremgarterstrasse 39
5622 Waltenschwil
Opening hours
Mon
07:30 - 12:00, 13:30 - 18:00
Tue
07:30 - 12:00, 13:30 - 18:00
Wed
07:30 - 12:00, 13:30 - 18:00
Thu
07:30 - 12:00, 13:30 - 18:00
Fri
07:30 - 12:00, 13:30 - 18:00
Sat
09:00 - 12:00
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-103.376.270
Founded
1996 · 30 years
Last commercial register change
April 12, 2023
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.
100.0
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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