Performance, power and 0-100 km/h
2026 BMW i4 eDrive40 has the quicker recorded 0-100 km/h time at 5.6 seconds, compared with 6.0 seconds for 2025 Mercedes-Benz C-Class C 300 4MATIC. 2026 BMW i4 eDrive40 has the higher listed output at 340 hp; 2025 Mercedes-Benz C-Class C 300 4MATIC is rated at 258 hp, a difference of 82 hp. The torque figures follow 2026 BMW i4 eDrive40 at 430 Nm and 2025 Mercedes-Benz C-Class C 300 4MATIC 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
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 BMW i4 eDrive40 provides the larger quoted cargo volume: 470 litres versus 455 litres, a difference of 15 litres. 2026 BMW i4 eDrive40 is 32 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 Mercedes-Benz C-Class C 300 4MATIC has the lower listed starting price at $45,400, compared with $53,900 for 2026 BMW i4 eDrive40. 2026 BMW i4 eDrive40 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.