2018 Audi A8 (D5) Dimensions, Size & Specs

Compared to its predecessor, the Audi A8 (D4), the 2018 A8 (D5) generation is slightly larger and heavier, reflecting advancements in technology and luxury amenities. The D5 generation stretches to 5172 mm (203.6 inches) in length versus the D4’s approximately 5170 mm (203.5 inches), showing marginal increase in length. The width remains quite similar but the D5 expands the width to 1945 mm (76.6 inches) without mirrors and 2130 mm (83.9 inches) with mirrors, offering a subtly larger footprint. Weight-wise, the D5 ranges between 1920 to 2300 kg (4233 to 5071 lbs), generally heavier than the D4, due to new safety features, electrification components, and more substantial sound insulation. These size increments contribute to enhanced passenger space, improved structural rigidity, and a more commanding presence on the road.

The Audi A8 (D5) 2018, with its width of 1945 mm (76.6 inches) excluding mirrors and height of 1473 mm (58 inches), will fit within the dimensions of a standard residential garage, which typically measures about 2.4 to 2.7 meters (7.9 to 8.9 feet) wide and 2.1 to 2.4 meters (6.9 to 7.9 feet) high. However, when the mirrors are extended, the width increases to 2130 mm (83.9 inches), which can be a tight fit depending on garage width and setup. Owners should exercise caution when maneuvering to avoid mirror or door damages. Overall, the A8 (D5) can be accommodated in a standard garage, but precise measurement of one's garage space and careful entry are recommended.

The Audi A8 (D5) offers a luggage capacity ranging from 390 to 505 liters (13.8 to 17.8 cubic feet), depending on the model variant and configuration. This volume is competitive within the full-size luxury sedan segment, providing ample space for several suitcases or golf bags, making it practical for long trips or business travel. When compared to rivals like the BMW 7 Series which offers around 515 liters (18.2 cubic feet), or the Mercedes-Benz S-Class with about 500 liters (17.7 cubic feet), the Audi A8’s luggage space is similar, ensuring it meets the expectations of both luxury and utility that buyers in this class anticipate.

The curb weight of the Audi A8 (D5) 2018 ranges between 1920 kg and 2300 kg (4233 to 5071 lbs), depending on the specific engine choice and optional equipment fitted. The maximum permissible weight varies from 2680 kg to 2900 kg (5904 to 6393 lbs). These figures indicate the significant heft of this luxury sedan which comes from extensive use of high-strength materials, technology, and luxury fittings, contributing to ride quality, safety, and performance. The wide range in weights also reflects differences between entry-level and more powerful or armored variants of the model.

The Audi A8 (D5) 2018 supports a variety of rim sizes ranging from 17.9J up to 21 inches, and the tire sizes include 235/55 R18, 255/45 R19, 265/40 R20, 235/60 R17, and 265/35 R21. Larger rims with lower profile tires (such as 21 inches with 265/35 tires) typically improve handling and corner stability by reducing sidewall flex, but may make the ride firmer over rough surfaces. Smaller rims (17 or 18 inches) tend to enhance ride comfort, absorbing road irregularities better. This range allows buyers to balance sporty dynamics with luxurious comfort according to their preferences.

The Audi A8 (D5) measures 1945 mm (76.6 inches) wide without mirrors but expands to 2130 mm (83.9 inches) when mirrors are opened. This additional width can challenge parking and maneuvering in tight urban spaces, as many city parking spots and narrow streets leave little clearance. Drivers should exercise caution when navigating close quarters. Some markets equip the A8 with features like foldable mirrors or sensors and cameras to assist in tight parking scenarios, mitigating difficulty caused by the car's generous width with mirrors extended.

The roof load capacity of the Audi A8 (D5) 2018 ranges between 90 and 100 kilograms (198 to 220 pounds). This capacity allows owners to mount roof boxes, luggage racks, or other accessories safely without risking damage or compromising vehicle handling. While this is a relatively standard roof load for luxury sedans, it is sufficient for typical uses such as carrying extra luggage during travel or recreational gear. However, given the car's luxury status and aerodynamic design, heavy roof loads are generally minimized to maintain fuel efficiency and driving dynamics.

The Audi A8 (D5) 2018 stands competitively within the full-size luxury sedan segment. Its length of 5172 mm (203.6 inches) places it alongside rivals like the BMW 7 Series and Mercedes-Benz S-Class, which have similar lengths in the 5170-5250 mm (203-206 inches) range. Width excluding mirrors at 1945 mm (76.6 inches) is slightly narrower compared to some competitors, which can benefit urban usability. Passenger space inside is generous, with ample legroom and headroom typical of class leaders, ensuring comfort for all occupants. The A8’s size strikes a balance between commanding road presence and functional dimensions manageable in city driving and parking.

The Audi A8 (D5) 2018 benefits extensively from its dimensions to offer a well-rounded luxury experience. The overall length of 5172 mm (203.6 inches) and width of 1945 mm (76.6 inches) provide a commanding on-road presence, emphasizing the car’s premium positioning. Interior space is generous, accommodating passengers comfortably with enhanced legroom and headroom typical of full-size sedans. The large luggage capacity of up to 505 liters (17.8 cubic feet) adds practicality for travel and daily use. Additionally, the car's height of 1473 mm (58 inches) ensures a sleek aerodynamic profile, contributing to fuel efficiency and reducing wind noise, while maintaining luxury and style.