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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesMachine repairWiesendangenZ-Diesel Service GmbH
Z-Diesel Service GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Z-Diesel Service GmbH provides technical support and services for marine and stationary Sulzer four-stroke diesel engines. Its services include maintenance and repair planning, troubleshooting, overhaul supervision, field service, training and assistance with spare-parts procurement.

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Offering

Products & services

Industry:Machine repair
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Z-Diesel Service GmbH

✓ Offered7
Technical support for SULZER four-stroke diesel engines
Technical consultation, fault rectification and monitoring for marine and power-plant installations with SULZER four-stroke diesel engines from the ZA40S, Z40/48, S20, A20 and A/AT25 series.
Maintenance, overhaul and field service
Support for general maintenance, repairs, monitoring during dockings and overhauls, as well as deployment of field service on site.
Fault analysis and emergency support
Technical assistance after engine damage, recommendations for emergency repairs, analysis of engine performance and problems with the control system.
Planning of repair and docking periods
Pre-inspections, planning of repair periods and dry-docking, identification of required parts, assessment of possible upgrades and overhaul of the engine control system.
Spare parts sourcing and warehousing advice
Support with spare-parts procurement, supplier selection, emergency parts, inventory assessment, initial on-board stock and storage recommendations.
Inspection of used vehicles / second-hand vessels
Inspection of the engine condition, assessment of performance parameters and class documents, and checking of spare parts on board, if needed with a survey trip.
Training on four-stroke SULZER engines
Crew trainings and customer-specific training on board or on shore on four-stroke SULZER engines.
Trust & reputation

ranQ Trust Score of Z-Diesel Service GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of November 2026

Z-Diesel Service GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Z-Diesel Service GmbH scores 67.8 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%
Z-Diesel Service GmbH 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%
Z-Diesel Service GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of November 2026.

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

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Location

Langenstrasse 33
8542 Wiesendangen

At a glance

Legal form
Limited Liability Company
UID
CHE-189.769.255
Founded
2021 · 5 years
Last commercial register change
June 11, 2021
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • ZHWiesendangen
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.
88.0
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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