2018 Audi A8L (D5) Dimensions, Size & Specs

A standard garage size varies globally, but typical single-car garages measure about 2400 to 3000 mm (95 to 118 inches) in width and around 4800 to 6000 mm (189 to 236 inches) in length. The Audi A8 Long (D5) measures 5302 mm (208.7 inches) in length and 1945 mm (76.6 inches) in width excluding mirrors, extending to 2130 mm (83.9 inches) including mirrors. It will comfortably fit lengthwise in a standard garage, though owners should be mindful of the width with mirrors extended; some garages might be narrow for the width with mirrors open but can accommodate the car once mirrors are folded. Height at approximately 1485 mm (58.5 inches) poses no issue for standard garage heights, which generally exceed 2100 mm (82.6 inches).

The Audi A8 Long (D5) has a curb weight ranging from 1945 kg to 2330 kg (4288 to 5137 lbs), depending on the model and equipment. This weight is typical for a full-size luxury sedan equipped with advanced technology, safety features, and luxury amenities. For comparison, competitors like the BMW 7 Series and Mercedes-Benz S-Class often exhibit curb weights in a similar range, reflecting the robust construction and luxury content expected in this segment. The A8's weight ensures solid driving dynamics while also providing excellent ride comfort and stability.

The luggage compartment of the Audi A8 Long (D5) offers a capacity ranging between 390 and 505 liters (13.8 to 17.8 cubic feet), offering ample space for typical luxury sedan needs, from business luggage to weekend bags. Compared to its predecessor, the D4 generation, which had around 505 liters capacity in its standard-length version as well, the A8 Long balances slightly less space due to its extended wheelbase and focus on rear passenger comfort. However, the design efficiently maximizes usable space with a practical layout that accommodates luggage while maintaining a quiet cabin environment.

The Audi A8 Long (D5) has a width of 2130 mm (83.9 inches) including its side mirrors, which is wider than its body width of 1945 mm (76.6 inches). Typical highway lane widths globally are between 3200 mm to 3750 mm (126 to 148 inches). With its mirrors extended, the A8 Long occupies just over half the lane width, well within normal limits for safe highway driving. Drivers should, of course, be mindful when navigating narrow lanes or tight urban environments, but on highways and broader roads, the vehicle width is comfortably manageable.

The Audi A8 Long (D5) supports a variety of tire sizes and rims, ranging from 17-inch to 21-inch wheels to balance ride comfort and sporty handling. Tire options include 235/60 R17, 235/55 R18, 255/45 R19, 265/40 R20, and 265/35 R21. Corresponding rim sizes vary from 8J x 17 to large 9J x 21 rims. Smaller rims and tires (17-18 inches) enhance ride comfort by absorbing road irregularities better, favored for smooth, quiet cruising. Larger rims (19-21 inches) provide improved grip and sharper handling due to shorter tire sidewalls but may result in a firmer ride. Buyers can select based on their preference for comfort or sporty dynamics.

Compared to the A8 Long (D4) generation, produced until 2017, the D5 generation brought a slightly larger footprint and advanced technology upgrades. The D5 is approximately 5302 mm (208.7 inches) long, whereas the D4 was shorter, generally about 5239 mm (206.3 inches). The increased length in the D5 model translates into improved rear legroom and cabin luxury. Width and height are similar, though the D5 offers a more sculpted exterior design with lighter construction thanks to the extensive use of aluminum and high-strength steel. Technologically, the D5 added the latest infotainment, driver assistance systems, and a more sophisticated mild hybrid powertrain in some variants, enhancing efficiency and comfort over the D4.

The Audi A8 Long (D5) supports a roof load capacity ranging between 75 to 100 kg (165 to 220 lbs). This specification is important for owners who use roof racks for luggage carriers, roof boxes, or sports equipment like bikes and skis. The weight limit ensures that attachments do not compromise vehicle stability or roof structural integrity. Given the high luxury sedan design, the roof structure is reinforced to safely carry typical rooftop cargo without impacting driving dynamics or safety, making the A8 Long suitable for long-distance travel where additional luggage capacity may be required.

The Audi A8 Long (D5) competes directly with other flagship full-size luxury sedans such as the BMW 7 Series, Mercedes-Benz S-Class, and Lexus LS. At 5302 mm (208.7 inches) in length, the A8 Long is on the longer side, especially its long-wheelbase version, providing excellent rear passenger space. Its width (1945 mm or 76.6 inches without mirrors) and height (around 1485 mm or 58.5 inches) are close to rival models, which generally measure between 5100 to 5300 mm in length and have similar widths. The Audi stands out with its advanced aluminum-based construction to save weight while maintaining rigidity, a luxurious minimalist interior design, and cutting-edge technology that is competitive with other European luxury sedans.

The Audi A8 Long (D5) version is specifically designed with extended rear legroom and comfort in mind. Compared to the standard wheelbase A8, the long-wheelbase variant adds substantial space, allowing rear passengers a more relaxed seating position with additional knee and foot space—ideal for chauffeured rides. While overall exterior length is 5302 mm (208.7 inches), the extended wheelbase significantly increases the cabin's rear seating area. This spaciousness is supplemented by premium materials, optional reclining rear seats, and advanced climate and entertainment controls tailored to rear occupants, cementing the A8 Long as one of the most comfortable full-size sedans for rear passengers worldwide.