Mercedes GLA-Class (2014) is 422 mm (16.61 inch) longer and 109 mm (4.29 inch) wider than Subaru Trezia (2015).
Subaru Trezia (2015) is 101 mm (3.98 inch) higher, 350 kg (772 lbs) lighter and has 7 liters (0.25 ft3) bigger cargo space than Mercedes GLA-Class (2014).