The Mercedes-Benz S-Class AMG PHEV should be manageable in city use when judged against its listed dimensions. Key size figures include 2025 AMG S 63 E PERFORMANCE: 5336 mm; 2025 AMG S 63 E PERFORMANCE: 2130 mm; 2025 AMG S 63 E PERFORMANCE: 1515 mm; 2025 AMG S 63 E PERFORMANCE: 5. Length affects parking ease, width affects tight ramps and urban lanes, while wheelbase gives a clue to cabin comfort and highway stability.