Automotive Efficiency Standard (IAF-AES)
IAF-AES v1.0 — Draft for Stakeholder Review
A harmonised, KPI-based framework for energy, time and material efficiency across vehicles, plants and operations.
What is it?
The Automotive Efficiency Standard (IAF-AES) defines measurable efficiency criteria across the mobility value chain. It enables manufacturers, suppliers, logistics providers and service networks to demonstrate verifiable improvements in energy usage, throughput and resource productivity.
IAF-AES is designed as a global, performance-based benchmark that complements environmental sustainability programmes by focusing on operational outcomes: doing more with less, consistently and transparently.
Why does it matter?
Efficiency drives competitiveness, resilience and customer value. It reduces exposure to energy volatility, unlocks capacity without new capex, and shortens time-to-market. For public stakeholders, comparable efficiency metrics support better policy design and technology adoption. IAF-AES provides a common language and verification method that works across regions and product segments.
Scope & KPI Matrix
| Module | Primary KPIs | Typical Evidence | Notes |
|---|---|---|---|
| A. In-Use Vehicle Efficiency | Energy per distance (EV Wh/km or fuel eq.), aerodynamic efficiency (CdA), rolling resistance class, thermal/HVAC efficiency, energy recovery ratio | Type-approved & instrumented tests; telematics samples; calibration logs; tyre class docs | Normalisation by vehicle segment, climate band and duty cycle. |
| B. Plant & Operations Efficiency | Energy intensity (kWh/vehicle), water per unit, Overall Equipment Effectiveness (OEE), first-pass yield, scrap/rework ratio, takt/cycle time | Metered utilities; MES/SCADA exports; quality reports; maintenance logs; calibration evidence | Boundary conditions and metering accuracy must be documented. |
| C. Logistics & Service Efficiency | Energy per ton-km, load factor, backhaul rate, service cycle time, first-time-fix rate | Fleet telematics; route plans; warehouse WMS exports; service ticket analytics | Applies to inbound/outbound logistics and aftersales networks. |
Certification Families
Efficient Vehicle
Efficient Product
Efficient Operation
How does it work?
Applicants submit evidence against the relevant module(s). Independent assessors verify measurements, apply normalisation factors, and compute a weighted score. Segment-based benchmarks ensure fair comparisons. Surveillance confirms that performance is maintained over time.
| Evaluation Pillar | Weight | Examples of Evidence |
|---|---|---|
| Measurement Quality & Boundary Definition | 25% | Metering plans, calibration records, sampling protocol, uncertainty analysis |
| Normalisation & Benchmarking | 20% | Climate/duty-cycle adjustments, segment baselines, equivalence rules |
| Efficiency Performance (Core KPIs) | 35% | KPI calculations, trend analysis vs. baseline, independent test results |
| Management System & Improvement | 20% | Targets, action plans, governance, periodic reviews, evidence of continuous improvement |
Governance & Alignment
IAF-AES is aligned with widely recognised international practices in energy management, process excellence and measurement assurance, while adding automotive-specific KPI definitions and verification rules. Oversight includes cross-committee technical review, appeals procedures and market surveillance.
Timeline & Contact
Committee Draft release
45-day consultation with OEMs, suppliers, logistics providers and service networks.
Pilot assessments
One EV plant, one component facility, one logistics operation and one service network in different regions.
Feature freeze & committee ballot
Editorial finalisation and approval package prepared for vote.
Final publication
IAF-AES v1.0 released with Assessors’ Guide and Evidence Pack.
Join the IAF-AES Pilot Cohort
We invite early participants to shape benchmarking rules, test normalisation methods and co-develop implementation guidance.