Performance, power and 0-100 km/h
2026 Audi RS3 Sportback has the quicker recorded 0-100 km/h time at 3.7 seconds, compared with 4.9 seconds for 2026 Mercedes-Benz CLA CLA 350 4MATIC with EQ Technology. 2026 Audi RS3 Sportback has the higher listed output at 407 hp; 2026 Mercedes-Benz CLA CLA 350 4MATIC with EQ Technology is rated at 354 hp, a difference of 53 hp. The torque figures follow 2026 Mercedes-Benz CLA CLA 350 4MATIC with EQ Technology at 515 Nm and 2026 Audi RS3 Sportback at 500 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
2026 Mercedes-Benz CLA CLA 350 4MATIC with EQ Technology provides the larger quoted cargo volume: 405 litres versus 282 litres, a difference of 123 litres. 2026 Mercedes-Benz CLA CLA 350 4MATIC with EQ Technology is 342 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 RS3 Sportback 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.