Standard No. ISO 16750

Scope International standard, common for Europe export

Capability CMA & CNAS accredited laboratory

Scheduling Scheduled per project

ISO 16750 is the international standard specifying the environmental conditions and test methods for electrical and electronic equipment in road vehicles. Products exported to Europe and global markets commonly cite it. Technically it is identical to GB/T 28046.

Standard positioning

ISO 16750's international standing makes it the default choice for export projects. Chinese OEMs mostly cite GB/T 28046, but the two are essentially identical in technical requirements.

Scope

Applies to: electrical and electronic equipment used in road vehicles.
Applies in: exports to Europe, exports worldwide, and customer acceptance where an international standard is required.
Note: ISO 16750 does not cover EMC items; EMC is addressed by CISPR 25 or ISO 11452.

Structure and content

Part 1–2: Vocabulary and definitions

General definitions and terms.

Part 3: Mechanical loads

Test methods for vibration and shock, with severity graded by mounting location.
Part 3 is the most frequently used part in real projects, especially vibration and shock.

Part 4: Climatic loads

Test methods for temperature, humidity, solar radiation, condensation, chemical exposure and ingress protection.

Part 5: Chemical loads

Liquid and gas contact, flame retardancy.

Part 6: Vehicle environment

Whole-vehicle test methods.

Acceptance

Same as GB/T 28046: the standard defines methods and the acceptance basis is agreed with the customer.
Export projects commonly cite the standard system of the customer's region — for example the EN variant for EU customers.

Common non-conformities

The same failure modes as GB/T 28046, including solder joint cracking, connector failure and sealing problems.
Export-specific note: materials must also comply with EU regulation such as REACH, which sits outside ISO 16750 but is still mandatory.

Relationship to other standards

With GB/T 28046

Identical adoption with the same technical content; the report must state the exact revision cited.

With LV 124

LV 124 is an OEM standard, stricter on several items and with requirements of its own.

With AEC-Q

AEC-Q addresses components and PCBs; ISO 16750 addresses electrical and electronic equipment used in vehicles. Different levels.

Service notes

The laboratory holds both CMA and CNAS accreditations, with approximately 10,000 m² of space and 500+ instruments. All testing is completed in our own laboratories — no subcontracting. On-site visits and witnessed testing are supported.

Testing is scheduled per project. When submitting samples, tell us your expected timeline; we will confirm a feasible plan against current availability and keep you updated at each milestone.

Test Matrix

Test items and typical conditions

The six parts of ISO 16750 each address a different class of stress, and Part 2 (electrical loads) is where in-vehicle electronics fail most often. The table lists the commonly requested items by part; for export projects the exact version must be stated on the report.

Test part	Typical test items	Common condition ranges	What the verdict hinges on
Part 1 — General	Terminology, operating modes, functional status definitions	No specific stress involved	How functional status A / B / C is partitioned
Part 2 — Electrical loads	DC supply voltage range, overvoltage, superimposed AC voltage, voltage dip and recovery, reverse voltage, ground offset, open circuit and short circuit	Steps are defined separately for 12 V and 24 V systems; exact voltages and timing follow the customer technical agreement	Functional status A / B / C
Part 3 — Mechanical loads	Random vibration, mechanical shock, free fall, stone impact	Graded by mounting location; engine bay and chassis positions are more severe	Structural integrity and electrical continuity
Part 4 — Climatic loads	Cold, heat, temperature cycling, thermal shock, damp heat, condensation, salt mist, solar radiation	Temperature extremes and cycle counts are set by mounting location	Material and seal ageing
Part 5 — Chemical loads	Contact with liquid and gaseous media, flammability	Determined by the media actually contacted	Corrosion and flammability
Part 6 — Vehicle environment	Whole-vehicle test methods	Usually out of scope at component level	System-level behaviour

Conditions and limits above are typical ranges for reference. The actual test levels, sample quantity and acceptance criteria follow the mutually confirmed test plan and standard version. Source: the clauses of each referenced standard.

Have a testing requirement? Send us your product details

Tell us the product model and test requirements. Our engineers will map out the test plan, the applicable standards and the item combination, and provide a quotation reference. The more specific the request, the sharper the answer.

Free scoping of the test plan and standards
Pre-scan testing during R&D to cut rework cost
On-site visits and witnessed testing supported
Scheduling per project, with progress updates at each milestone

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