Level 3 vs Level 4 vs Level 5 Autonomy
SAE Autonomy Level Comparison
Comparison of SAE autonomy levels 3, 4, and 5 — driver responsibility, ODD, deployment status, and key players.
Level 3Level 4Level 5
Full Specification Comparison
| Specification | Level 3 | Level 4 | Level 5 |
|---|---|---|---|
| Driver Responsibility | Fallback only | None (in ODD) | None (anywhere) |
| Operational Design Domain | Highway <40 mph | Geo-fenced | All conditions |
| Approved in US | Yes (Mercedes, Honda) | Yes (Waymo, Cruise) | No |
| Driver Monitoring | Yes | No | No |
| Key Players | Mercedes, Honda, Audi | Waymo, Zoox, Cruise | None yet |
| Commercial Status | Available (2024) | Available (2020) | Not available |
| Liability | Driver (fallback) | Manufacturer | Manufacturer |
Expert Verdict
Level 3 (Mercedes Drive Pilot) is approved in US and Germany; Level 4 (Waymo) operates driverless in geo-fenced areas; Level 5 remains theoretical with no timeline.
Subject Breakdown
Level 3
0 Category Wins
Level 4
2 Category Wins
- ★ Approved in US: Yes (Waymo, Cruise)
- ★ Driver Monitoring: No
Level 5
2 Category Wins
- ★ Driver Responsibility: None (anywhere)
- ★ Operational Design Domain: All conditions