Performance, power and 0-100 km/h
Both cars record the same 0-100 km/h time of 6.2 seconds. 2026 Mercedes-Benz EQB 350 4MATIC has the higher listed output at 292 hp; 2025 Alfa Romeo Tonale PHEV Q4 is rated at 280 hp, a difference of 12 hp. Both specifications list 520 Nm of torque. 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
2026 Mercedes-Benz EQB 350 4MATIC carries the longer listed range at 444 km, against 69 km for 2025 Alfa Romeo Tonale PHEV Q4. 2026 Mercedes-Benz EQB 350 4MATIC has the higher listed DC charging ceiling at 100 kW, compared with 32 kW. 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
2026 Mercedes-Benz EQB 350 4MATIC provides the larger quoted cargo volume: 495 litres versus 422 litres, a difference of 73 litres. 2025 Alfa Romeo Tonale PHEV Q4 carries the higher towing rating at 1,200 kg, while 2026 Mercedes-Benz EQB 350 4MATIC is listed at 750 kg. 2026 Mercedes-Benz EQB 350 4MATIC is 156 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 Alfa Romeo Tonale PHEV Q4 has the lower listed starting price at $43,500, compared with $54,500 for 2026 Mercedes-Benz EQB 350 4MATIC. 2026 Mercedes-Benz EQB 350 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.