Diesel Technic Group
Diesel Technic Group is a German automotive aftermarket parts distributor founded in 1972, supplying approximately 50,000 DT Spare Parts and SIEGEL Automotive components through an authorised distribution partner network serving workshops and fleet operators in over 150 countries from 7 global locations.
- Company typePrivate
- Founded1972
- HeadquartersKirchdorf, Germany
- Headcount501–1,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What Diesel Technic Group does
Diesel Technic Group, operating through its legal entity Diesel Technic SE, is a German automotive aftermarket parts distributor founded in 1972 and headquartered in Kirchdorf, Lower Saxony. The company's core product is the DT Spare Parts brand, comprising approximately 50,000 SKUs covering commercial vehicles, vans, passenger cars, agricultural vehicles, construction equipment, ship/stationary engines, and industrial applications, supported by a 24-month product guarantee. Diesel Technic Quality System (DTQS) governs product development, initial sample inspection, series inspection, and aftersales quality, with certifications including ISO 9001 (since 1996), ISO 14001, BS OHSAS 18001, and ISO 27001 (since 2024). The product portfolio is complemented by a second brand, SIEGEL Automotive.
The company operates a B2B distribution-only model, selling exclusively through an authorised partner network that resells to workshops and fleet operators. Distribution is enabled by the Partner Portal — a proprietary eCommerce procurement platform with real-time stock checking, delivery history, aftersales forms, and advanced filter-by-technical-characteristic search (web and mobile app). Supporting infrastructure includes a fully automated small parts warehouse with shuttle technology and automated guided vehicles (AGVs) at the Kirchdorf headquarters, plus a regional logistics center in Avellino, Italy. The Parts Specialists brand and mobile app provide technical content and scan-based product identification for workshop professionals. Diesel Technic runs six wholly-owned regional subsidiaries in France, Spain, the UK, Italy, the UAE (Middle East & Africa hub), and Singapore (Asia Pacific), with operations reaching partners in over 150 countries.
Revenue is generated through hardware sales of DT Spare Parts and SIEGEL Automotive products to distribution partners, with pricing handled through Partner Portal accounts and not publicly disclosed. The company employs approximately 650 staff from more than 30 nationalities across 7 locations and remains privately held under founder family stewardship, with founder Horst Lieberwirth serving as Chairman of the Supervisory Board and a four-member Board of Management (led by CEO Dr.-Ing. Steffen Vondran) running day-to-day operations. No external funding rounds or institutional investors are disclosed, and revenue figures are not publicly reported.
Diesel Technic Group firmographics
Firmographics- Name
- Diesel Technic Group
- Legal name
- Diesel Technic SE
- Website
- https://dieseltechnic.com
- Company type
- Private
- Founded year
- 1972
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- Diesel Technic Group is a German automotive aftermarket parts distributor founded in 1972, supplying approximately 50,000 DT Spare Parts and SIEGEL Automotive components through an authorised distribution partner network serving workshops and fleet operators in over 150 countries from 7 global locations.
- Ownership category
- akta.pro rank
Diesel Technic Group industry classification
Industry- Product category
- Automotive Aftermarket Parts
- NAICS
- Motor Vehicle Gasoline Engine and Engine Parts Manufacturing (33631)
- SIC
- Wholesale-Motor Vehicle Supplies & New Parts (5013)
- akta.pro primary industry
- Automotive Parts, Tires & Workshop Supplies Marketplaces (CRAFAHAD)
Keywords
Where Diesel Technic Group is headquartered
LocationHeadquarters
- HQ city
- Kirchdorf
- HQ country
- Germany
- HQ region
- Europe
Offices7 records
Markets served
Diesel Technic Group business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Automotive Parts and Accessories Sales: Diesel Technic develops and supplies brand spare parts (DT Spare Parts) to distribution partners worldwide. The company generates revenue through product sales to its network of distribution partners who then serve workshops and fleet operators. With around 50,000 products and operations in 150 countries, the company operates on a B2B model through authorized distribution partners.
- SIEGEL Automotive Products: Additional product line under the SIEGEL Automotive brand offering automotive parts and accessories.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Transaction based/ take rate | Pay-as-you-go | B2B partner pricing through distribution network |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels10 records
Diesel Technic Group product offering
Product offeringCore offering
Diesel Technic develops and supplies approximately 50,000 branded automotive parts and accessories under its DT Spare Parts and SIEGEL Automotive brands for commercial vehicles, trucks, trailers, buses, vans, agricultural and construction equipment. The company distributes exclusively through authorized B2B distribution partners in over 150 countries, supported by an eCommerce Partner Portal, automated logistics with shuttle warehouse technology, and the Diesel Technic Quality System (DTQS) backed by a 24-month product guarantee.
Product overview
Diesel Technic Group is a German automotive parts supplier founded in 1972, operating as a multi-brand portfolio company with DT Spare Parts as its flagship brand offering approximately 50,000 automotive parts and accessories. The company distributes exclusively through authorized distribution partners in over 150 countries. Its product ecosystem centers on the DT Spare Parts brand supported by the Partner Portal (eCommerce procurement platform) and Parts Specialists (workshop professional support). Additional brands include SIEGEL Automotive. The portfolio is complemented by partner services including the Partner Program, Partner Services, Logistical Fulfillment, DT Commerce tools, the DTQS quality system, Product Catalogues, HelpDesk, and Premium Shop, creating an integrated offering that spans product supply, digital commerce, quality assurance, and customer support.
Differentiator
Problem solved
Functional benefit
Brands
- DT Spare Parts: Main product brand offering around 50,000 automotive parts and accessories with 24-month guarantee.
- Parts Specialists
- SIEGEL Automotive
Products and services
- DT Spare Parts
Quantifiable outcome
- 50,000+ products available through single partner
- +2 more outcomes
Companies that use Diesel Technic Group
Customer profileNamed customers18 records
Segments4 records
Ideal customer profiles2 records
Diesel Technic Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration5 records
Feature5 records
Diesel Technic Group partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- datenschutz nord GmbHminorExternal data protection officer service provider. Provides data protection officer services for GDPR compliance and privacy matters.
Scale indicators7 records
Recent moves14 records
Expansion highlights6 records
Diesel Technic Group competitors and assessment
Company assessmentDirect peers
- MEYLE: German-owned aftermarket parts manufacturer (Wulf Gaertner Autoparts AG) producing MEYLE and MEYLE-HD branded parts across chassis, steering, engine and drivetrain categories, with strong presence in commercial vehicle and passenger car aftermarket via distributor networks.
- TMD Friction: Global brake friction manufacturer behind the Textar, Mintex, Don, Cobreq, and Pagid aftermarket brands; competes with Diesel Technic's brake-related SKUs in commercial vehicle and passenger car segments through distributor networks.
- MANN+HUMMEL: Family-owned filtration specialist (Mann-Filter, Wix, Filtron) with deep commercial-vehicle presence and a global aftermarket distribution footprint; a direct comparable in terms of independent brand, multi-region distribution, and CV heritage.
- Rhiag Group: Italy-headquartered independent aftermarket parts distributor (acquired by D'Ieteren) with broad multi-brand spare parts operations across Southern and Central Europe; closely comparable to Diesel Technic as a multi-country B2B parts distributor.
- Inter Cars: Poland-headquartered, Warsaw-listed aftermarket parts distributor with 150,000+ SKUs sold through hundreds of branches and partner workshops across Central/Eastern Europe; the closest publicly traded parallel to Diesel Technic's B2B distribution-led model.
- Febi Bilstein: German aftermarket parts brand owned by Bilstein Group, offering a comparable multi-SKU portfolio of replacement parts (engine, brake, chassis, electrical) for commercial vehicles and passenger cars distributed through workshops globally - the closest head-to-head competitor to DT Spare Parts.
Broad incumbents
- Continental Automotive Aftermarket: Continental's aftermarket business (including ContiTech, VDO, and ATE brake brands) supplies belts, hoses, electronics, and brake components through distributors to workshops; overlaps strongly with Diesel Technic's product categories and distribution model.
- ZF Aftermarket: Major Tier-1 supplier (including former WABCO) with a dedicated commercial-vehicle aftermarket division offering transmissions, driveline, chassis and braking components; directly overlaps with Diesel Technic's commercial vehicle product portfolio.
- Robert Bosch Automotive Aftermarket: Global Tier-1 incumbent with a massive aftermarket division covering diagnostics, parts, and workshop services across commercial vehicles and passenger cars; competes with Diesel Technic on breadth, OE-grade quality, and workshop relationships.
- Mahle: Stuttgart-based Tier-1 supplier with a significant aftermarket division (engine components, filtration, thermal management) serving passenger car and commercial vehicle workshops globally; larger scale but similar independent-brand aftermarket positioning.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Diesel Technic Group social profiles
Digital presenceDiesel Technic Group compliance and trust
Trust signalCompliance4 records
Diesel Technic Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Diesel Technic Group leadership team
Management profileNumber of profiles
Profiles7 records
Diesel Technic Group subsidiaries and ownership
Company hierarchySubsidiaries6 records
Diesel Technic Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Diesel Technic Group M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Diesel Technic Group
What does Diesel Technic Group do?
Diesel Technic develops and supplies approximately 50,000 branded automotive parts and accessories under its DT Spare Parts and SIEGEL Automotive brands for commercial vehicles, trucks, trailers, buses, vans, agricultural and construction equipment. The company distributes exclusively through authorized B2B distribution partners in over 150 countries, supported by an eCommerce Partner Portal, automated logistics with shuttle warehouse technology, and the Diesel Technic Quality System (DTQS) backed by a 24-month product guarantee.
Is Diesel Technic Group a public or private company?
Diesel Technic Group is a private company. It is classified as family owned and is currently operating.
When was Diesel Technic Group founded?
Diesel Technic Group was founded in 1972. It employs 501 to 1,000 people.
Where is Diesel Technic Group based?
Diesel Technic Group is headquartered in Kirchdorf, Germany, in the Europe region.
How does Diesel Technic Group make money?
Two revenue lines are on record. Automotive Parts and Accessories Sales are the primary driver. The others are SIEGEL Automotive Products.
Who are Diesel Technic Group's main competitors?
Direct peers on record are MEYLE, TMD Friction, MANN+HUMMEL, Rhiag Group, Inter Cars and Febi Bilstein. Broad incumbents are Continental Automotive Aftermarket, ZF Aftermarket, Robert Bosch Automotive Aftermarket and Mahle.
Does Diesel Technic Group have an API?
No public API is recorded for Diesel Technic Group.
What industry is Diesel Technic Group in?
Diesel Technic Group's product category is Automotive Aftermarket Parts. Its primary akta.pro industry code is CRAFAHAD, Automotive Parts, Tires & Workshop Supplies Marketplaces. Its NAICS code is 33631 and its SIC code is 5013.