2018 Audi RS4 Avant (B9) Dimensions, Size & Specs

The Audi RS 4 Avant (B9) typically fits into a standard residential garage, though spatial considerations are important. With a width of 1866 mm (73.5 inches) excluding mirrors and 2022 mm (79.6 inches) including them, garages wider than 2.1 meters (about 82.7 inches) will accommodate it comfortably when mirrors are folded. Its height of 1404 mm (55.3 inches) and length of 4781 mm (188.2 inches) are within normal garage sizes. Still, owners should ensure their garage dimensions can comfortably handle the car’s length and width with mirrors folded to avoid any damage.

With mirrors opened, the RS 4 Avant's width extends to 2022 mm (79.6 inches), which adds roughly 15.6 cm (6.1 inches) compared to its body width. This expanded width must be considered for parking and navigating tight spaces like narrow lanes or parking garages. While the mirrors enhance driver visibility, they also require more lateral clearance. Folding the mirrors can alleviate space constraints during parking but is not always practical when driving. Thus, drivers should be mindful of these dimensions when maneuvering in urban or cramped environments.

The Audi RS 4 Avant (B9) has a curb weight of 1715 kg (3782 lbs) and a maximum weight of 2305 kg (5085 lbs). Curb weight refers to the vehicle’s weight without passengers or cargo but with all necessary fluids, while maximum weight includes passengers and cargo maxed out. This weight balance supports its high-performance character, providing stability at speed and agility in handling, despite its station wagon size. The weight contributes to a planted ride and helps optimize traction, especially given its powerful engine and AWD system.

The RS 4 Avant (B9) offers a generous 505 liters (about 17.8 cubic feet) of luggage capacity, which is excellent for a performance-oriented station wagon. This volume allows users to carry moderate to large amounts of luggage, grocery bags, sports gear, or equipment comfortably, making it a practical choice for families or enthusiasts who value both performance and utility. The space balances well with the sporty design, reinforcing the car's role as a versatile daily driver and spirited travel companion.

The RS 4 Avant (B9) has a roof load capacity of 90 kg (198 lbs). This limit supports carrying lighter items such as roof boxes, bike racks, or ski carriers without compromising structural integrity and safety. It is adequate for most recreational or travel needs, allowing owners to expand cargo capacity easily while maintaining the vehicle’s handling characteristics. For heavier items, alternative cargo solutions within the car’s interior or trailer options are recommended.

The car comes equipped with 9J x 19-inch rims and tires sized 265/35 R19. These large, wide wheels contribute significantly to stable cornering and grip by increasing the contact patch with the road. The low-profile 35 aspect ratio tires enhance handling precision and responsiveness, crucial for a high-performance estate like the RS 4 Avant. However, these tires typically provide a firmer ride compared to taller profiles, balancing sporty dynamics with comfortable cruising.

Compared to the B8 RS 4 Avant, the B9 generation measures slightly longer and wider, with the B9 stretching to 4781 mm (188.2 inches) in length and 1866 mm (73.5 inches) in width. The B9 is designed with a more aggressive and aerodynamic body while improving interior space and comfort. Overall, these dimensional updates contributed to better stability at higher speeds and improved cargo capacity. The B9 also features modern styling and improved chassis engineering, making it more refined and performance-oriented than the B8.

In size, the RS 4 Avant (B9) compares favorably to competitors like the Mercedes-AMG C63 Estate and BMW M3 Touring. It offers a balance of spaciousness and sporty dimensions — the 4781 mm length and 1866 mm width provide ample room without making it bulky. Practicality is enhanced by a 505-liter luggage capacity, which is competitive among high-performance wagons. While some rivals may offer more extreme sport tuning or slightly larger cargo volumes, the RS 4 Avant blends everyday usability with potent performance, making it a well-rounded choice in this niche.

Produced from 2017 to 2019, the Audi RS 4 Avant (B9) is a high-performance station wagon that combines everyday practicality with sports car dynamics. It features a 2.9-liter twin-turbo V6 producing around 450 horsepower, all-wheel drive (quattro system), and a sophisticated suspension setup for agile handling. The design is aggressive yet refined, with wide flared wheel arches and aerodynamic enhancements. Its production run marked significant technological advances over the B8 generation, including improved infotainment, driver assistance systems, and lightweight materials, making it a modern and desirable RS model.