Performance, power and 0-100 km/h
2025 Mercedes-Benz C-Class C 300 4MATIC has the quicker recorded 0-100 km/h time at 6.0 seconds, compared with 8.4 seconds for 2025 Audi A3 35 TFSI. 2025 Mercedes-Benz C-Class C 300 4MATIC has the higher listed output at 258 hp; 2025 Audi A3 35 TFSI is rated at 150 hp, a difference of 108 hp. The torque figures follow 2025 Mercedes-Benz C-Class C 300 4MATIC at 400 Nm and 2025 Audi A3 35 TFSI at 250 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 Audi A3 35 TFSI has the lower recorded consumption at 6.5 L/100km; 2025 Mercedes-Benz C-Class C 300 4MATIC is listed at 7.6 L/100km. 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 Mercedes-Benz C-Class C 300 4MATIC provides the larger quoted cargo volume: 455 litres versus 380 litres, a difference of 75 litres. 2025 Mercedes-Benz C-Class C 300 4MATIC is 408 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 A3 35 TFSI has the lower listed starting price at $35,400, compared with $45,400 for 2025 Mercedes-Benz C-Class C 300 4MATIC. 2025 Mercedes-Benz C-Class C 300 4MATIC 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.