Acura RLX (2015) is 253 mm (9.96 inch) longer, 172 mm (6.77 inch) higher and has 122 liters (4.31 ft3) bigger cargo space than Aston Martin Vantage (2017).
Aston Martin Vantage (2017) is 20 mm (0.79 inch) wider and 45 kg (99 lbs) lighter than Acura RLX (2015).