C&S

What C&S does

C&S Group GmbH is a privately held German engineering services company founded in 1995 by Prof. Dr. Wolfhard Lawrenz and headquartered in Wolfenbüttel, with a secondary office in Ingolstadt. The company specializes in testing, validation, and consulting for automotive in-vehicle networks, covering legacy protocols (CAN, LIN, FlexRay) as well as emerging ones (CAN FD, CAN XL, Automotive Ethernet including 10BASE-T1S and MultiGBASE-T1). It operates as an ISO/IEC 17025 accredited test house and is TISAX certified for information security, serving automotive OEMs, Tier-1 suppliers, and semiconductor manufacturers. The product portfolio includes conformance and interoperability testing services, customer-specific test programs, individually developed test systems, the proprietary INVIO software tool for network validation, the jointly developed CAN XL Evaluation Board (with Bosch, NXP, and Volkswagen), and the IOPT.CAN test specification family. The consulting arm provides physical layer signal integrity, simulation, characterization, modeling, test coverage analysis, and coaching services. Revenue is generated through professional services engagements, hardware sales of test tools, and productized software. The company has expanded internationally through the NeefA joint venture with NEXTY Electronics in Japan (2024) and a HongKe distribution partnership covering mainland China, Hong Kong, Macau, and Taiwan (2026), while maintaining active roles in OPEN Alliance, Avnu Alliance, Automotive SerDes Alliance, CiA, and IEEE standards work.

Name

C&S

Legal name

C&S group GmbH

Website

https://cs-group.de

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

11–50 employees

Short description

C&S Group GmbH is an ISO 17025 accredited German test house specializing in conformance, interoperability, and physical-layer testing for automotive in-vehicle networks (CAN, CAN XL, LIN, Automotive Ethernet), serving OEMs, Tier-1 suppliers, and semiconductor manufacturers with consulting, proprietary tools, and standards leadership.

Ownership category

akta.pro rank

Product category

Automotive Network Testing Services

NAICS

Testing Laboratories and Services (541380), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Services-Testing Laboratories (8734), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Passenger Vehicle Final Assembly & End-of-Line Testing (ICE) (IMACAAAE)

Keywords

• Automotive network testing
• Conformance test services
• In-vehicle network validation
• Automotive ethernet testing
• Signal integrity consulting

Headquarters

HQ city

Wolfenbüttel

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Infrastructure

Revenue model

1. Testing Services: Conformance and interoperability testing services for automotive network protocols including CAN, CAN FD, CAN XL, LIN, FlexRay, and Automotive Ethernet at component, ECU, and network levels.
2. Consulting Services: Expert consulting for physical layer signal integrity, test consulting, analysis, concepts and coaching, and IVN validation and simulation.
3. Test Systems and Tools: Sale of individually developed test systems for standardized conformance testing and test tools including CAN-XL Evaluation Board and CAN-FD Test Module.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

C&S Group GmbH provides testing and consulting services for automotive in-vehicle communication networks, specializing in conformance and interoperability testing for protocols such as CAN, CAN-FD, CAN-XL, and Automotive Ethernet. The company operates an ISO/IEC 17025 accredited test house and develops proprietary tools, including the INVIO software platform and CAN-XL evaluation boards, for use in compliance, interoperability, and signal integrity verification.

Product overview

C&S Group GmbH is a specialized automotive network testing and consulting company with 30+ years of experience. The company offers a comprehensive portfolio of testing services including Conformance Testing for standardized protocols (CAN, Automotive Ethernet, LIN, FlexRay), Customer Specific Testing for OEM requirements, and Test Systems for standardized and custom testing. Their product suite includes hardware tools like the CAN-XL Evaluation Board (developed with Bosch, NXP, and VW) and the CAN-FD Test Module, as well as the INVIO software tool for in-vehicle network validation. The consulting division provides Physical Layer Signal Integrity services (simulation, analysis, modelling), Test Consulting, and Analysis/Concepts/Coaching. Test specifications such as IOPT.CAN provide standardized interoperability test procedures. Through the NeefA joint venture with NEXTY Electronics, they offer comprehensive in-vehicle Ethernet testing services in Japan. The company maintains ISO/IEC 17025 accreditation and TISAX certification for information security.

Differentiator

Problem solved

Functional benefit

Products and services

• Conformance Testing Formal conformance testing of automotive bus controllers and network components against standards such as ISO 16845, provided as a service through an ISO/IEC 17025 accredited test house for automotive OEMs and Tier-1 suppliers.
• Customer Specific Testing Tailored test programs and analyses developed in collaboration with customers to validate automotive network devices against project-specific requirements.
• Test Systems Test systems and modules used to perform automated conformance and interoperability checks on automotive network devices, including CAN-FD test modules.
• CAN-XL Evaluation Board Evaluation hardware board that enables customers to develop, test, and validate CAN-XL capable devices, including SigLizard PHY support.
• INVIO Test Tool Proprietary software tool developed by C&S for automating and analyzing conformance and interoperability tests on automotive network devices.
• Physical Layer Signal Integrity Services Consulting services focused on signal integrity of physical layers in automotive networks such as CAN and Ethernet, supporting chip, ECU, and network design decisions.
• Test Consulting Advisory services covering test strategy, specification development, and process improvement for automotive network validation.
• Analysis, Concepts and Coaching Technical analysis, conceptual design support, and coaching engagements covering automotive network technologies and test methodology.
• MultiGBASE-T1 Interoperability Testing Interoperability testing services for MultiGBASE-T1 Automotive Ethernet physical layer devices, validating coexistence and compliance across vendor implementations.
• IOPT.CAN Test Specifications Proprietary test specification suite used by C&S and its customers to verify CAN and CAN-FD conformance, including interoperability profiles.
• NeefA Test House (Japan) Locally operated test house in Japan, run via NEXTY Electronics, providing C&S-aligned CAN and CAN-FD conformance testing services for Japanese automotive customers.

Quantifiable outcome

• Reduced time-to-market through standardized conformance testing
• +2 more outcomes

Named customers8 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• HongKe Technology Co., Ltd.coreChannel Partner/ Reseller/ Distributor · 5 June 2026HongKe is now the official distributor of C&S products and services throughout mainland China, Hong Kong, Macau, and Taiwan. Headquartered in Guangzhou, China, HongKe will distribute products including the INVIO tool and testing services.
• TDK ElectronicsminorStrategic or Co-development Partner · 18 September 2025C&S Group GmbH and TDK Electronics co-presented at the Ethernet & IP @ Automotive Technology Day in Toulouse (2025) on 10BASE-T1S In-Vehicle Networking Validation.
• In-techcoreStrategic or Co-development Partner · 1 September 2025C&S and In-tech jointly hosted the first ASA-ML Interoperability Plugfest in Munich with five semiconductor manufacturers and around 20 observing companies participating.
• NEXTY Electronics CorporationcoreChannel Partner/ Reseller/ Distributor · 8 January 2024Toyota Tsusho Group's electronics trading company NEXTY Electronics, in collaboration with C&S Group GmbH, launched in-vehicle Ethernet test house brand NeefA (Network expert for Automotive). Offers testing and consulting services for introducing in-vehicle Ethernet in Japan, covering hardware design evaluation to system evaluation.
• Bosch, NXP, VolkswagencoreStrategic or Co-development Partner · 9 March 2022Joint development of CAN XL evaluation board. The DE1-SoC (Terasic) board includes the Bosch CAN XL core with coordinator software, featuring CAN XL SIC transceivers compliant to CiA 610-3 by NXP.
• ADaC (Advanced Data Controls Corp)minorChannel Partner/ Reseller/ Distributor · 9 September 2019Partner presenting C&S services at AUTOMOTIVE WORLD in Nagoya (2019) to reach Japanese automotive industry customers.
• KeysightminorStrategic or Co-development Partner · 9 March 2019Co-exhibition partnership at Automotive Ethernet Congress events. Keysight and C&S presented together at events in Munich (2019).
• OPEN AlliancecoreTechnology or IntegrationActive member contributing to automotive Ethernet standardization. C&S participates in standardization of interoperability test specifications for automotive Ethernet speed rates including MultiGBASE-T1.
• Avnu AlliancecoreTechnology or IntegrationPromoter member of Avnu Alliance, contributing experience on automotive standards with respect to IVN and their testability to create an interoperable ecosystem of low-latency, time synchronized networked devices.
• Automotive SerDes Alliance (ASA)coreTechnology or IntegrationAdopter member contributing experience of more than 20 years on automotive standards with respect to IVN and their testability. Supporting creation and implementation of conformance test procedures for interoperability.
• CAN in Automation (CiA)coreTechnology or IntegrationActive participant in CiA events including CAN XL Plugfests and Member Days. Contributing to CAN standard development and test specifications.

Scale indicators5 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• Spirent Communications: Provider of Automotive Ethernet conformance and interoperability test systems used by OEMs, Tier-1s and chip vendors; competes with C&S specifically in OPEN Alliance and IEEE 802.3 automotive Ethernet conformance certification.
• ETAS (Bosch subsidiary): Bosch-owned automotive software, measurement, and validation tools provider whose INCA and related test products target overlapping CAN, Automotive Ethernet and ECU validation use cases for OEMs and Tier-1s.
• TraceTronic: Germany-based automotive test and validation specialist with ECU and network test solutions (ECU-TEST, TEST-GUIDE) that overlap with C&S's testing and consulting offerings for OEMs and Tier-1s.
• Intrepid Control Systems: US-based vendor of automotive network test hardware and software (Vehicle Spy, neoVI) covering CAN, CAN FD, LIN and Automotive Ethernet protocols with a comparable niche focus on conformance and interoperability testing.
• Vector Informatik: Germany-based provider of automotive network development and testing tools (CANoe, CANalyzer, vTESTstudio) that directly competes with C&S in CAN, CAN FD, CAN XL and Automotive Ethernet conformance and validation tooling.
• Technica Engineering: Bavaria-based specialist in Automotive Ethernet and in-vehicle network test/measurement equipment and plugfests, competing head-to-head with C&S in 100BASE-T1/1000BASE-T1 and zonal architecture validation.
• dSPACE: German supplier of automotive simulation, validation, and ECUs/network testing platforms, offering overlapping CAN and Automotive Ethernet test capabilities aimed at the same OEM and Tier-1 customers as C&S.

Broad incumbents

• Rohde & Schwarz: Global T&M incumbent offering oscilloscopes and Automotive Ethernet/CAN test solutions that overlap with C&S's automotive test instrumentation, though R&S serves a far broader customer base across industries.
• Keysight Technologies: Global test-and-measurement incumbent with significant Automotive Ethernet and CAN protocol test product lines; competes with C&S in higher-layer Ethernet conformance while offering much broader scope across the electronics T&M market.

Emerging players

• Marquardt: Tier-1 automotive supplier increasingly active in in-vehicle network and Ethernet validation; an emerging player that may both consume and compete with C&S-style conformance and interoperability services internally.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about C&S