
Car dealership for Mercedes-Benz, smart, Peugeot, Citroën and DS: sales, service, body shop and commercial vehicle workshop in Thurgau
Auto Lang AG
Kreuzlingen · Frauenfeld · AmriswilNew on Amplifa
About Auto Lang AG
Auto Lang AG is a family-owned company with around 150 employees and holds the Mercedes-Benz and smart dealership territory for the entire canton of Thurgau. At its locations in Kreuzlingen, Frauenfeld and Amriswil, the company sells, services and repairs passenger cars and commercial vehicles of the brands Mercedes-Benz, smart, Peugeot, Citroën, DS Automobiles and Fuso. The service portfolio includes service and maintenance according to manufacturer specifications, mechanical and electronic repairs, an in-house body shop with paint shop in Frauenfeld, tyre service including a tyre hotel, wheel rim repairs, hose service for hydraulic hoses, trailer service, MFK/RBV preparation and tank certifications (ADR/SDR) as a recognized maintenance facility for mineral oil tanks. The commercial vehicle workshop in Kreuzlingen specializes in vehicles from 3.5-tonners to trucks. The business was founded in 1929 in Kreuzlingen by Edwin Lang; succession is in the third, currently active generation with co-owner and general manager Adrian Rüedi.
- Site
- Kreuzlingen
- Processes
- Service & Maintenance, Mechanical & Electronic Repairs, Body/tinsmithing & Paint Shop, Tyre service incl. tyre hotel, Wheel rim repairs, Hose service (hydraulic hoses), Trailer service, MFK/RBV preparation and follow-up inspections
- Materials
- Tank certification
- Certificates
- ADR/SDR maintenance facility for mineral oil tanks
- Founded
- 1929
- Employees
- 150
- Industries
- Automotive trade, Car dealership/workshop, Commercial vehicles/trucks, Fleet operators
- 01
Sales of passenger cars and commercial vehicles
- 02
Service & Maintenance
- 03
Mechanical & Electronic Repairs
- 04
Body Shop & Paint Shop
- 05
Tyre and Trailer Service
- 06
MFK/RBV and Tank Certifications
Services & Equipment
Tank certification
Recognized maintenance facility for mineral oil tanks under ADR/SDR, with repair and preparation work for approval inspections.
Locations

Kreuzlingen
CH- Tyre mounting machine (passenger cars/commercial vehicles up to trucks)
- Brake test stand
- Vibratory plates

Frauenfeld
CH
Amriswil
CHAutomobile Diethelm AG: Mercedes-Benz passenger car & van sales; customer service and maintenance
Vehicles & Services



Inside the production






Industries
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Tyre mounting machine | – | – | all dimensions (passenger cars and commercial vehicles, up to trucks) | – | Kreuzlingen |
| Brake test stand | – | – | – | – | Kreuzlingen |
| Vibratory plates | – | – | – | – | Kreuzlingen |
Additional services
Quality & Certification
The workshop works according to the manufacturers' specifications, using state-of-the-art diagnostic equipment, including for electric vehicles. Auto Lang AG is a recognized maintenance facility in the ADR/SDR sector for mineral oil tanks; five Mercedes-Benz-certified employees work in the body shop/paint shop.
| Evidence | Kreuzlingen |
|---|---|
| ADR/SDR maintenance facility for mineral oil tanks |
History
- 1929
Founding of the garage business at Hauptstrasse 99 in Kreuzlingen by Edwin Lang; after the war, expansion into fuel and petroleum trading, and after 1950 tank depots in Kreuzlingen and Lengwil
- 1974
Sale of the garage business on Hauptstrasse, new building on Seestrasse (Lang Energie AG) and commercial vehicle workshop on Sonnenwiesenstrasse
- 1993
Rename to Lang Fahrzeugcenter and takeover of the Mercedes-Benz passenger car dealership
- 1997
Takeover of the Mercedes-Benz vans dealership
- 1998
Showroom expansion and takeover of the smart dealership
- 2003
Takeover of Garage Ehrat AG in Frauenfeld
- 2004
Rename to Auto Lang AG
- 2009
Integration of the Citroën brand in Frauenfeld
- 2011
Reopening of Frauenfeld after complete renovation, including car wash center and tyre hotel
- 2015
Takeover of Carrosserie Wyler, integration of Peugeot and new Citroën/Peugeot/DS showroom in Frauenfeld
- 2016
Modernization of the workshop hall, spare parts warehouse and commercial vehicle customer service in Kreuzlingen
- 2020
Expansion of the passenger car business according to MAR 2020 in Kreuzlingen and takeover of the Peugeot and Citroën passenger car dealerships
- 2021
Acquisition of Automobile Diethelm AG (Amriswil) and ZUMAC AG (Frauenfeld)