Performance, power and 0-100 km/h
2025 BMW 1 Series 120 has the quicker recorded 0-100 km/h time at 7.8 seconds, compared with 9.4 seconds for 2025 Mazda3 2.0 Skyactiv-G. 2025 BMW 1 Series 120 has the higher listed output at 170 hp; 2025 Mazda3 2.0 Skyactiv-G is rated at 150 hp, a difference of 20 hp. The torque figures follow 2025 BMW 1 Series 120 at 280 Nm and 2025 Mazda3 2.0 Skyactiv-G at 213 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 Mazda3 2.0 Skyactiv-G has the lower recorded consumption at 6.3 L/100km; 2025 BMW 1 Series 120 is listed at 6.8 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 BMW 1 Series 120 provides the larger quoted cargo volume: 380 litres versus 358 litres, a difference of 22 litres. 2025 Mazda3 2.0 Skyactiv-G is 98 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 Mazda3 2.0 Skyactiv-G has the lower listed starting price at $23,900, compared with $38,800 for 2025 BMW 1 Series 120. 2025 BMW 1 Series 120 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.