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 6.0 seconds for 2025 BMW i5 eDrive40. 2026 Audi A6 e-tron S6 e-tron has the higher listed output at 551 hp; 2025 BMW i5 eDrive40 is rated at 340 hp, a difference of 211 hp. The torque figures follow 2026 Audi A6 e-tron S6 e-tron at 855 Nm and 2025 BMW i5 eDrive40 at 400 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 590 km for 2025 BMW i5 eDrive40. 2025 BMW i5 eDrive40 has the lower recorded consumption at 14.2 kWh/100km; 2026 Audi A6 e-tron S6 e-tron is listed at 15.8 kWh/100km. 2026 Audi A6 e-tron S6 e-tron has the higher listed DC charging ceiling at 270 kW, compared with 205 kW. 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 490 litres, a difference of 12 litres. 2025 BMW i5 eDrive40 is 132 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 BMW i5 eDrive40 has the lower listed starting price at $68,495, 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.