The Bentayga measures approximately 5,125mm in length and 2,010mm in width, with a wheelbase of 2,995mm . It seats up to five passengers in opulent comfort, with cargo volume of 484 litres . The PHEV battery placement is designed to minimize intrusion into cabin or luggage space.

The Bentayga is equipped with comprehensive safety features including multiple airbags (front, side, curtain, knee), ABS, EBD, brake assist, stability and traction control, ISOFIX child seat mounts, front/rear parking sensors, 360-degree camera, blind spot monitoring, lane departure warning, and rear cross traffic alert .

The Bentayga PHEV supports AC charging via a standard Type 2 connector. Using a 7.4 kW home wallbox, a full charge typically takes approximately 2.5-3 hours. It can also be charged using a standard household socket with the appropriate cable, though this will take longer. DC fast charging is not typically supported on PHEV models.

The Bentayga has a fuel tank capacity of approximately 85 litres . The PHEV version offers significantly improved fuel economy compared to petrol-only variants, especially in urban driving where electric mode can be utilized. Combined fuel consumption figures are typically in the range of 3.5-4.0 L/100km when regularly charged, though real-world figures vary with driving style and charging frequency.

The Bentayga PHEV competes in the ultra-luxury SUV segment. Its main rivals include the Lamborghini Urus, Rolls-Royce Cullinan, Aston Martin DBX, and Mercedes-Maybach GLS. In the PHEV luxury SUV space, it also competes with the BMW XM and Porsche Cayenne E-Hybrid at a slightly lower price point .

Bentley offers an extensive palette of exterior colours for the Bentayga, with over 90 standard options and virtually unlimited bespoke possibilities through Mulliner personalization. Standard colours include Beluga, British Racing Green, Bronze Gold, Sequin Blue, Candy Red, Magnolia, Ice, Arctic White, Azure Purple, and Anthracite . Buyers can specify virtually any colour to their preference.