E-Marking for Automotive — Complete Guide to ECE Type Approval
A comprehensive guide to E-marking for automotive components, covering the ECE type approval process, required tests, marking formats, and the difference between e-mark and E-mark certifications.
What Is E-Marking?
E-marking is a mandatory certification system for automotive components and systems sold in countries that are signatories to the UNECE (United Nations Economic Commission for Europe) 1958 Agreement. The E-mark indicates that a product has been tested and approved by a designated type approval authority, confirming compliance with the applicable ECE regulation. Without a valid E-mark, certain automotive parts cannot be legally placed on the market or installed in vehicles within participating countries.
The system covers a broad range of vehicle components, from lighting and electromagnetic compatibility (EMC) to safety glazing, mirrors, tires, and advanced driver assistance systems. The goal is to ensure a harmonized level of safety and performance across international borders.
Which Products Need E-Marking?
E-marking is required for a wide range of automotive products and systems, including but not limited to:
- Lighting equipment (headlamps, signal lamps, reflectors) under ECE R7, R19, R37, R87, R112, R128, etc.
- Electromagnetic compatibility (EMC) components and vehicles under ECE R10
- Tires under ECE R30 and R54
- Safety glazing under ECE R43
- Mirrors and rear-view devices under ECE R46
- Braking systems under ECE R13 and R13-H
- Seats and head restraints under ECE R17 and R25
- Steering equipment under ECE R79
- Electronic sub-assemblies (ESAs) that may affect electromagnetic compatibility
If a component falls under a UNECE regulation, it generally requires E-mark type approval before it can be sold as an aftermarket or OEM part in the regulated markets.
e-mark (EU) vs. E-mark (ECE): What Is the Difference?
There is a common source of confusion between the lowercase “e-mark” and the uppercase “E-mark.” Although the terms are sometimes used interchangeably, they refer to slightly different approval frameworks:
| Feature | e-mark (EU Type Approval) | E-mark (ECE Type Approval) |
|---|---|---|
| Legal basis | EU Directives and Regulations (e.g., 2007/46/EC) | UNECE 1958 Agreement and ECE Regulations |
| Marking format | Lowercase “e” followed by the member state number inside a rectangle | Uppercase “E” followed by the country code inside a circle |
| Geographic scope | European Union member states | All UNECE 1958 Agreement contracting parties (including EU) |
| Issuing authority | EU member state type approval authority | UNECE contracting party type approval authority |
| Mutual recognition | Recognized across all EU member states | Recognized across all contracting parties |
In practice, an E-mark granted under the ECE system is widely accepted across EU member states as well, and many approval authorities issue both marks simultaneously. For EMC specifically, ECE R10 is the regulation that governs E-mark approval for vehicles, components, and electronic sub-assemblies.
The Process to Obtain an E-Mark
Obtaining an E-mark follows a structured process involving the manufacturer, a technical service (test laboratory), and a type approval authority:
Step 1: Application
The manufacturer submits a formal application to a type approval authority in a contracting party country. The application includes product descriptions, technical documentation, drawings, and identification of the applicable ECE regulation(s).
Step 2: Selection of Technical Service
The type approval authority designates an accredited technical service (test laboratory) to perform the required testing. The technical service must be accredited to the relevant standard (typically ISO/IEC 17025) and recognized by the type approval authority.
Step 3: Testing
The technical service conducts the tests prescribed by the applicable ECE regulation. For EMC under ECE R10, this includes radiated emissions, conducted emissions, radiated immunity, conducted immunity (bulk current injection), and transient immunity testing.
Step 4: Test Report
Upon completion of testing, the technical service issues a comprehensive test report documenting the procedures, results, and compliance status.
Step 5: Type Approval Decision
The type approval authority reviews the test report and supporting documentation. If the product meets all requirements, the authority grants type approval and issues an E-mark certificate with a unique approval number.
Step 6: Marking
The manufacturer applies the E-mark to the approved product according to the format specified in the regulation. The marking must be durable, legible, and visible.
Required Tests for EMC E-Marking (ECE R10)
For electromagnetic compatibility, the core tests under ECE R10 include:
- Radiated emissions (broadband and narrowband) measured in a shielded anechoic chamber
- Conducted emissions on power supply and signal lines
- Radiated immunity using bulk current injection (BCI) and/or direct RF field exposure
- Transient immunity including ISO 7637-2 pulse testing for supply line disturbances
- Electrostatic discharge (ESD) immunity per ISO 10605
Test levels and limits depend on whether the product is classified as a component, electronic sub-assembly, or a complete vehicle.
E-Mark Marking Format
The E-mark is displayed as a capital letter “E” followed by the identifying number of the approving country, enclosed in a circle. Below or beside the circle, the regulation number and approval sequence number are indicated. For example:
E4 (inside a circle) indicates approval granted by the Netherlands. An additional suffix such as 10R-05 1234 would indicate ECE Regulation 10, revision 05, approval number 1234.
Relevant Regulations
Key ECE regulations frequently associated with E-marking include:
- ECE R10 — Electromagnetic compatibility (vehicles, components, ESAs)
- ECE R48 — Installation of lighting and light-signaling devices
- ECE R112 — Headlamps emitting asymmetrical passing beam
- ECE R13 — Braking of vehicles and trailers
- ECE R100 — Electric powertrain safety
- ECE R118 — Burning behavior of materials in vehicle interiors
How TESTUPS Can Help
TESTUPS provides end-to-end E-mark certification support, from initial product evaluation and pre-compliance testing to full type approval testing and certificate issuance. Our partnership with accredited technical services and recognized type approval authorities ensures a streamlined process. Whether you need EMC testing under ECE R10, transient immunity testing per ISO 7637-2, or complete E-mark certification for lighting or safety components, TESTUPS guides you through every step. Contact our engineering team to discuss your product requirements and certification timeline.
Need Expert EMC Assistance?
TESTUPS provides complete EMC solutions — from test equipment and anechoic chambers to certification services. Contact our team for tailored support.