Holzer Group
- Your full-service automotive service provider.
About the
Holzer Group
The Holzer Group is an internationally active, innovative full-service company specializing in high-tech services in various key industries. Building on our 35 years of experience in motorsports, we have continuously developed our expertise in engineering, production, and service, establishing ourselves as a valued partner for discerning customers.
The company philosophy is characterized by the highest precision and innovative spirit. The knowledge gained in racing has been continuously transferred to other industries and has contributed to the steady expansion of expertise.
Our customers come from the following industries:
Automotive
Aerospace
Industry
Motorsport
Our range of services covers various services that extend across the entire value chain. We offer customized technical solutions—from the initial idea to the finished product.
The combination of many years of experience, state-of-the-art technology, and a spirit of partnership within the team is the key to the success of the HOLZER Group. With this unique combination, we are ideally equipped to master future technological challenges and set new standards.
What sets
us apart.
Employees
Locations
satisfied customers
Projects
Certificates
Company structure &
Locations
Corporate structure
Locations
KLZ Bodywork & Paint Center.
- Subject areas
- KFZ-Service
- Accident repair
- Vehicle painting (2 booths)
- Office space 600 m²
- Total workshop area approx. 1,400 m²
- Storage area approx. 1,300 m²
Company headquarters in Bobingen.
- Subject areas
- Design & Development
- Vehicle body
- Parts manufacturing
- Office and production space > 6,500 m²
- Vehicle assembly area > 1,000 m²
- Storage area > 1,200 m²
Our
Management
Günther Holzer
Company founder and CEO
From motorsport pioneer to successful entrepreneur.
Günther Holzer is the founder of the Holzer Group, which has grown from its roots in professional motorsports into a high-tech service provider focusing on the automotive, aerospace, and industrial sectors.
Günther Holzer combines a passion for racing with a strong entrepreneurial spirit. His career began with a strong connection to motorsports, where he gained valuable experience in precision, innovation, and motivation. He successfully transferred these core values to the business world and shaped the Holzer Group into a versatile technology partner. He is considered the driving force behind the expansion and diversification of the company, which is now known for its engineering and production expertise.
Our
Mission statement
Vision
As a high-tech powerhouse in the SME sector, we are shaping the future of mobility and industry—from the racetrack to the skies.
Every day, we prove that our strong family roots and global innovation, go hand in hand.
Mission
What we do every day.
We make our partners' success possible to order.
With our unique motorsport DNA, we develop and manufacture innovative prototypes and small-series vehicles.
Values
Our corporate culture is based on core values from the dynamic world of motorsports, which shape our daily activities:
Small business owner mindset
Speed
Passion
Team spirit
1981 - present
History
Winner of the Opel Kadett Cup
Driver: Ronald Holzer
Co-driver: Günther Holzer
Preparation and deployment of Porsche vehicles (Porsche Turbo Cup), Opel rally cars (Opel Kadett Cup), and Lancia rally cars (International German Rally Championship)
Adam Opel AG factory driver in an Opel Manta 2.0L
Driver: Ronald Holzer
Co-driver: Günther Holzer
Construction of 100 Lancia Delta Integrale Gr. N /A rally cars; 1990 German Rally Champion
Driver: Ronald Holzer, Co-driver: Klaus Wendel
Comprehensive support for the Fiat Cinquecento Trofeo for Fiat Germany, including VIP vehicles for the 24-hour race at the Nürburgring (development, setup, event management, and customer support)
First circuit races with the BMW 318i in the ADAC Super Touring Car Cup
Factory team and logistics partner for Adam Opel AG in the German Super Touring Car Championship
Opel Vectra STW Factory Entry in the Super Touring Car Cup
Factory team for Subaru Deutschland GmbH in the German Rally Championship; German Rally Champion 1998/1999; Driver: Armin Kremer
Factory team for Adam Opel AG in the German Rally Championship, 2WD Class Champions 1999/2000
Driver: Niki Schelle, Driver: Armin Kremer
Move to the Bobingen location on Dr. Zoller Street; founding of RPC Rennsport
Production Center GmbH & Performance GmbH
Development partner for the overall project (vehicle, logistics, operations, sponsor relations) for Opel AG in the German Touring Car Masters
Logistical and technical support for the Alfa 147 Cup on behalf of Alfa Romeo Germany (development, setup, event management, and customer support)
ADAC Formula BMW Germany 2004–2008
Formula 3 Euro Series 2005 and 2007
Formula BMW Petronas Asia 2007–2009
Development of the complete vehicle, parts manufacturing, and vehicle assembly of the Opel Corsa OPC in accordance with Group N/A regulations for Adam Opel AG
Project management, design, development, and manufacturing of components, as well as on-track engineering support for the BMW Alpina B6 GT3
2011 ADAC GT Masters Championship
Design, technical support, and event management for the OPC Race Team on behalf of Opel AG, 24 Hours of Nürburgring
Complete vehicle development, engineering, parts procurement, parts manufacturing, vehicle assembly, logistics, maintenance, assembly, and race operations for the Hispania Racing F1 Team
e-cargo
Development and construction of a prototype
L6e / L7e class, electric drive
150 kg curb weight, tight turning radius
Technical, logistical, and team support for the AMG-Mercedes-Benz SLS-GT3 in the ADAC GT Masters, FIA GT3 European Championship, VLN, and the 24 Hours of Dubai / Nürburgring
Technical support for Hankook Tire in the DTM
Lotus Bike C-01
End-to-end development from concept design to production readiness, including parts manufacturing, assembly, and certification
Opel Cup (80 vehicles)
Complete Vehicle Development, Vehicle Bodywork, Testing, Homologation, Racing, Logistics & Customer Support
Opel Adam R2 (100 vehicles)
European Champion 2015, 2016, 2017, 2018
Complete Vehicle Development, Vehicle Bodywork, Testing, Homologation, Racing, Logistics & Customer Support
Development, parts manufacturing, assembly, testing, and service of hydraulic racing steering gearboxes
Porsche RSR, Porsche GT3 R17, R19 und R23
BMW M8 GTE, BMW M4 GT3 Evo
BMW Vision Driving Experience
Corsa R5 Concept
Complete Vehicle Development
Body, chassis, electrical system, prototype construction
F82 M4 GT4: 130 vehicles
Assembly of prototypes and pre-production models, dismantling of donor vehicles, complete vehicle assembly, homologation, quality management, vehicle delivery, logistics
ADAC GT Masters with the Audi R8 LMS GT3
Technical support and race support as
Team EFP by TECE
Drivers: E. Erhart / P. Kaffer Vanthoor / F. Spengler
Achievements: Race victory at the Sachsenring
Porsche Cayman GT4 R-GT Prototype
Full-scale development in accordance with regulations
Body, chassis, electrical system, prototype construction
Vehicle Construction and Prototype Testing
2018 Rallye Deutschland
M2 CS Racing (300 vehicles)
Construction of prototypes and pre-production models,
Factory delivery, paint job including roll cage,
Overall Assembly, Homologation, Quality Management, Vehicle Delivery, Logistics
Porsche 911 Altitude - "Edith“
Complete development, off-road suspension,
Construction of the prototype
Porsche Endurance Run
Full-vehicle endurance testing of the Cayenne and Panamera,
Boxster/Cayman, Macan
Mission-E Thermodynamics Structure
Macan Cargo Shuttle
Assembly of engine mounts
Testing BMW G82 M4 GT4
Construction of both prototypes, conducting test runs, team management, deployment of test vehicles, maintenance between runs, homologation, race entry at the 24 Hours of Portimão
Gemballa Marsien
Package, Vehicle Cooling, Design
Suspension kinematics, suspension design
Control arms, wheel carriers, subframes,
Parts manufacturing, vehicle assembly, testing, and certification
ADAC Opel Corsa E-Rallye Cup
Cupmanagement
Technical Support
Spare Parts Logistics
Customer Service
Prototype 1 Road Vehicle:
Design and development, off-road suspension, modification of the body-in-white and body panels, prototype construction and rollout
Prototype 2 Road Vehicle:
Design and development, off-road suspension, modification of the body-in-white and body panels, prototype construction and rollout
Development of a race car in accordance with GTX regulations
Development of the front and rear sections,
Monocoque integration, crash simulation,
Bodywork, hydraulic racing steering gear
General Contractor, Design, Testing
and registration, production of 300 vehicles,
the highest installation and quality standards,
After-sales service, spare parts supply
SOP 2024
Vehicle Development One-Off
Complete bodywork and customization
of the production vehicle
Road vehicle prototype:
Body-in-white modifications, chassis,
Powertrain, electrical system, construction of a
Prototypes
SOP Escalador in January 2026
In-house development and production
Concept development, design, prototyping,
Testing and Certification, Manufacturing and Construction
of production vehicles