2017 Alpina B5 Touring (G31) Dimensions, Size & Specs

This model has a curb weight of 2050 kg (4519 lbs), which reflects the vehicle's fully equipped and ready-to-drive mass excluding passengers and cargo. The maximum permissible weight, which is the total weight the vehicle can safely carry including passengers, cargo, and itself, is 2610 kg (5753 lbs). This substantial capacity underscores the B5 Touring’s robust build and engineering designed for high performance and utility.

The luggage capacity of the Alpina B5 Touring (G31) is quite generous, providing 570 liters (20.1 cubic feet) of space with the rear seats upright. When the rear seats are folded down, the luggage capacity expands dramatically to 1700 liters (60.0 cubic feet). This flexibility supports a wide range of uses, from everyday shopping to transporting larger cargo, making it highly practical for families and touring enthusiasts.

Fitting the Alpina B5 Touring (G31) into a standard garage depends on the garage dimensions but generally, standard residential garages in many regions accommodate vehicles up to about 2.44 meters (8 feet) wide and 5.5 to 6 meters (18 to 20 feet) in length. With a width of 1860 mm (73.2 inches) and a length of 4956 mm (195.1 inches), the B5 Touring comfortably fits within these parameters, although clearance may be tight in narrower or shorter garages. Owners should measure their garage space to ensure ease of entry and exit.

The Alpina B5 Touring rides on 20-inch rims sized 8.5J at the front and 10J at the rear, paired with tires sized 255/35 R20 (front) and 285/30 R20 (rear). These wider rear tires and large diameter rims enhance grip and stability, important for the car's powerful engine output and dynamic capabilities. Visually, the staggered setup adds an aggressive stance paired with Alpina's signature style, contributing both to performance handling precision and striking looks.

Compared to its predecessor, the Alpina B5 Touring based on the previous generation (F11), the G31 model is generally slightly longer, wider, and lower. This evolution improved interior space and luggage volume, offering greater practicality while maintaining the sporty character. The increase in width and length enhances stability and aesthetics, while refinements in weight management help performance despite the size increase.

When compared with similar performance wagons, such as the Audi RS4 Avant or Mercedes-AMG E63 S Wagon, the Alpina B5 Touring (G31) is competitive in dimensions. It tends to be slightly longer and heavier, with a more spacious luggage capacity, particularly when rear seats are folded. Each model balances size and performance differently, but the B5 Touring offers a harmonious mix of luxury, space, and high-speed cruiser capabilities.

The Alpina B5 Touring stands at a height of 1466 mm (57.7 inches). This relatively low profile for a station wagon improves aerodynamic efficiency, reducing drag for enhanced fuel economy and performance at high speeds. It also means the vehicle easily clears most standard parking structures and car washes, although taller roof racks or accessories might require extra attention for height clearance.

Weighing in at 2050 kg (4519 lbs) curb weight, the B5 Touring has a substantial mass reflecting its luxury, equipment, and performance tuning. While heavier vehicles often face challenges in fuel efficiency, Alpina’s engineering balances weight with powerful yet efficient powertrain technology to deliver strong acceleration and cruising capability without excessive consumption. The weight also contributes to a stable and comfortable ride, enhancing overall driving dynamics.

The Alpina B5 Touring (G31) embodies the perfect balance between high-performance engineering and practical utility. Its expansive dimensions—nearly 5 meters long and 1.86 meters wide—allow for generous passenger space and substantial cargo volume, with up to 1700 liters (60 cubic feet) of luggage capacity when rear seats are folded. These figures make it ideal for long-distance touring and family use without sacrificing the driver-focused refinement and power Alpina is renowned for. The vehicle’s thoughtful design and size provide ample room for occupants and gear, making it one of the most practical high-performance wagons on the market.