Performance, power and 0-100 km/h
2025 Tesla Model X Long Range has the quicker recorded 0-100 km/h time at 3.8 seconds, compared with 5.6 seconds for 2026 Audi Q8 e-tron 55 quattro. 2025 Tesla Model X Long Range has the higher listed output at 670 hp; 2026 Audi Q8 e-tron 55 quattro is rated at 408 hp, a difference of 262 hp. The torque figures follow 2025 Tesla Model X Long Range at 840 Nm and 2026 Audi Q8 e-tron 55 quattro at 664 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
2025 Tesla Model X Long Range carries the longer listed range at 580 km, against 498 km for 2026 Audi Q8 e-tron 55 quattro. 2025 Tesla Model X Long Range has the lower recorded consumption at 17.2 kWh/100km; 2026 Audi Q8 e-tron 55 quattro is listed at 19.8 kWh/100km. 2025 Tesla Model X Long Range has the higher listed DC charging ceiling at 250 kW, compared with 170 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
2025 Tesla Model X Long Range provides the larger quoted cargo volume: 907 litres versus 569 litres, a difference of 338 litres. 2026 Audi Q8 e-tron 55 quattro carries the higher towing rating at 2,500 kg, while 2025 Tesla Model X Long Range is listed at 2,268 kg. 2025 Tesla Model X Long Range is 142 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
2026 Audi Q8 e-tron 55 quattro has the lower listed starting price at $75,200, compared with $79,990 for 2025 Tesla Model X Long Range. 2025 Tesla Model X Long Range 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.