Mercedes B-Class (2014) is 114 mm (4.49 inch) higher, 335 kg (739 lbs) lighter and has 61 liters (2.15 ft3) bigger cargo space than Tesla Model 3 (2020).
Tesla Model 3 (2020) is 301 mm (11.85 inch) longer and 63 mm (2.48 inch) wider than Mercedes B-Class (2014).