Performance, power and 0-100 km/h
2026 Audi A6 e-tron S6 e-tron has the quicker recorded 0-100 km/h time at 3.9 seconds, compared with 8.5 seconds for 2025 Peugeot 408 1.6 PHEV 180 Allure. 2026 Audi A6 e-tron S6 e-tron has the higher listed output at 551 hp; 2025 Peugeot 408 1.6 PHEV 180 Allure is rated at 180 hp, a difference of 371 hp. The torque figures follow 2026 Audi A6 e-tron S6 e-tron at 855 Nm and 2025 Peugeot 408 1.6 PHEV 180 Allure at 300 Nm. These figures describe straight-line potential only; they do not establish braking performance, ride quality, steering response or durability under repeated hard use.
Range, battery, charging and efficiency
2026 Audi A6 e-tron S6 e-tron carries the longer listed range at 635 km, against 55 km for 2025 Peugeot 408 1.6 PHEV 180 Allure. Test cycle, temperature, wheel size and charging conditions can materially affect these results, so only figures measured on the same basis should be treated as directly comparable.
Dimensions, cargo space and towing
2026 Audi A6 e-tron S6 e-tron provides the larger quoted cargo volume: 502 litres versus 471 litres, a difference of 31 litres. 2026 Audi A6 e-tron S6 e-tron is 241 mm longer overall. Exterior size is not a benefit by itself: a longer body may create useful room, but cargo shape, rear-seat space and ease of parking still require a physical inspection.
Price and overall assessment
2025 Peugeot 408 1.6 PHEV 180 Allure has the lower listed starting price at $39,500, compared with $89,900 for 2026 Audi A6 e-tron S6 e-tron. 2026 Audi A6 e-tron S6 e-tron leads in more of the shared headline fields, but that is not a universal verdict: a buyer should weight price, performance, range and utility rather than simply count category wins. The assessment is based on the specifications shown here; it is not presented as a two-car road test.