Performance, power and 0-100 km/h
Both cars record the same 0-100 km/h time of 5.6 seconds. 2024 Audi A8 50 TDI quattro has the higher listed output at 286 hp; 2025 Audi A7 45 TFSI quattro S line is rated at 265 hp, a difference of 21 hp. The torque figures follow 2024 Audi A8 50 TDI quattro at 600 Nm and 2025 Audi A7 45 TFSI quattro S line at 370 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
Range and energy-use figures are either not shared by both cars or not directly comparable across these powertrain types.
Dimensions, cargo space and towing
2025 Audi A7 45 TFSI quattro S line provides the larger quoted cargo volume: 535 litres versus 505 litres, a difference of 30 litres. 2024 Audi A8 50 TDI quattro is 225 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 Audi A7 45 TFSI quattro S line has the lower listed starting price at $68,900, compared with $89,900 for 2024 Audi A8 50 TDI quattro. 2025 Audi A7 45 TFSI quattro S line 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.