Vehicle Safety Star Rating

1. Definition and Core Functions

Vehicle Safety Star Rating is a standardised assessment system conducted by independent third-party bodies under the New Car Assessment Programme (NCAP). It comprehensively evaluates a vehicle's occupant protection, pedestrian protection, and active safety performance in crash tests, presenting the safety levels directly to car buyers through star ratings (★). Its primary purpose is to provide consumers with an objective safety benchmark for direct comparison, while driving carmakers to continuously elevate safety standards through assessment-led R&D.

2. Major Rating Systems and Key Differences

Rating System	Organisation	Key Testing Highlights	Rating Meaning (5-Star Example)
C-NCAP (China)	CATARC	Tailored to China's accident data, incorporating local scenarios such as e-bike targets and night-time two-wheeler tests	Probability of severe occupant injury ≤ 10%
Euro NCAP (Europe)	Consortium of European governments	Renowned for rigorous standards; the 2026 protocol splits safety into four pillars, each with an independent passing threshold	Overall score must meet minimum requirements across all individual pillars
C-IASI (China Insurance)	China Insurance Industry	Focuses on crashworthiness and repairability, assessing post-crash repair costs from an insurer's perspective	Individual categories are graded across four tiers: G/A/M/P

As C-NCAP and Euro NCAP differ in test speeds and scoring weightings, the star ratings of the same vehicle model under different protocols should not be compared directly. Meanwhile, C-IASI focuses primarily on low-speed crash repair costs, differing in priority from NCAP's focus on occupant safety.

3. Evaluation Pillars and Key Test Items

Modern NCAP assessment protocols generally cover the following core pillars:

Occupant Protection: Evaluates injury risks to adult and child crash test dummies via full-width frontal rigid barrier crash, frontal 40% offset crash (64 km/h), side impact (50 km/h), and whiplash tests.
Vulnerable Road User (VRU) Protection: Simulates impacts involving pedestrians and cyclists to assess the impact-cushioning capability of structures such as the bonnet.
Active Safety Assist: Assesses the collision avoidance capabilities of active driver aids such as Autonomous Emergency Braking (AEB), Lane Keep Assist, and Electronic Stability Control (ESC) in critical scenarios.

The upcoming C-NCAP 2027 protocol will introduce localised scenarios such as Chinese-build crash dummies, night-time two-wheeler tests, and blind spot cut-out hazards obscured by road dividers . Under Euro NCAP's 2026 rules, a five-star rating requires passing all four pillars independently; the lack of key active safety features like AEB will severely penalise the final star rating.

4. Future Trends and Industry Impact

Safety star ratings are shifting from purely passive safety to a holistic "passive + active + post-crash rescue" safety approach, progressing from standardised laboratory conditions to real-world collision scenarios. Over its two decades of implementation, C-NCAP has assessed over 600 vehicle models and conducted nearly 2,000 crash tests, pushing the fitment rate of AEB on new cars from under 10% to nearly 75%.