Performance, power and 0-100 km/h
2025 Kia Carnival EX has the quicker recorded 0-100 km/h time at 7.5 seconds, compared with 10.4 seconds for 2024 Mercedes-Benz B-Class B 180 d. 2025 Kia Carnival EX has the higher listed output at 290 hp; 2024 Mercedes-Benz B-Class B 180 d is rated at 116 hp, a difference of 174 hp. The torque figures follow 2025 Kia Carnival EX at 355 Nm and 2024 Mercedes-Benz B-Class B 180 d at 260 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
2024 Mercedes-Benz B-Class B 180 d has the lower recorded consumption at 5.0 L/100km; 2025 Kia Carnival EX is listed at 10.2 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 Kia Carnival EX provides the larger quoted cargo volume: 627 litres versus 455 litres, a difference of 172 litres. 2025 Kia Carnival EX is 736 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
2024 Mercedes-Benz B-Class B 180 d has the lower listed starting price at $36,900, compared with $37,690 for 2025 Kia Carnival EX. 2025 Kia Carnival EX 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.