2023 Alpina B3 Sedan (G20, facelift 2022) Dimensions, Size & Specs

The Alpina B3 Sedan (G20, facelift 2022) has a curb weight of 1875 kg (4134 lbs), which is the weight of the vehicle with standard equipment, all necessary operating consumables, and a full tank of fuel but without passengers or cargo. The maximum permissible weight, accounting for passengers and cargo, is 2340 kg (5159 lbs). This weight range ensures the car maintains dynamic driving characteristics while accommodating the comfort features and performance enhancements evident in the Alpina tuning.

The Alpina B3 Sedan offers a luggage capacity of 480 liters (16.95 cubic feet), which is quite competitive within the compact executive sedan segment. This capacity allows for practical storage for everyday use, such as groceries, travel bags, or sports equipment. Compared to rivals like the Audi S4 or Mercedes-AMG C43, the B3’s trunk space is comparable or slightly superior, providing a good balance between sportiness and utility.

The Alpina B3 Sedan is equipped with 19-inch rims, specifically 9.5J x 19 and 8.5J x 19 sizes, fitted with 265/35 R19 tires on the rear and 255/35 R19 on the front. These wider tires and sizeable rims enhance grip and handling, contributing to the car’s sporty driving dynamics and precise cornering ability. The tire profile also helps balance comfort with performance, making the car capable both on spirited drives and daily commutes.

A standard garage width typically ranges around 2.4 to 2.7 meters (7.9 to 8.85 feet). The Alpina B3 Sedan measures 2068 mm (81.4 inches) in width with mirrors opened, meaning it comfortably fits within a standard garage. However, the driver should exercise caution when parking to ensure enough space for door opening and maneuvering around the vehicle, especially in tighter garages where clearance margins are narrower.

The Alpina B3 Sedan (facelifted G20) maintains a very similar size profile compared to its predecessor, the first-generation G20 Alpina B3. Length, width, and height have stayed close to the previous model’s dimensions, with minimal differences mainly attributed to updated body styling and aerodynamic improvements. This continuity helps retain the B3’s established balance of sportiness and practicality, while modernizing its presence and functionality.

Dimensionally, the Alpina B3 Sedan (G20 facelift) is very close to peers such as the Audi S4 and Mercedes-AMG C43, all sitting within the compact executive sedan category. The B3 offers a length of 4723 mm (185.9 inches), a width with mirrors of 2068 mm (81.4 inches), and a luggage capacity of 480 liters (16.95 cu ft), generally on par or slightly larger in rear trunk space. Performance-wise, Alpina’s tuning focuses on a blend of luxury refinement and aggressive power delivery, setting it apart through bespoke engineering and driving dynamics.

The Alpina B3 Sedan stands at a height of 1440 mm (56.7 inches), which is fairly typical for vehicles in this segment. This height allows for a comfortable interior headroom for both front and rear passengers. The slightly reduced height compared to some larger sedans helps improve the car’s aerodynamic profile and sporty stance but does not compromise on passenger comfort in terms of vertical space.

The Alpina B3 Sedan’s width measures 1827 mm (71.9 inches) excluding mirrors and 2068 mm (81.4 inches) with mirrors opened. While the width without mirrors is manageable in most urban settings, the increased span with mirrors requires attentiveness when driving through narrow lanes or parking in tight spots. The mirrors’ aerodynamic design and folding ability help mitigate space concerns, but drivers should always be cautious to avoid contact with obstacles.

The Alpina B3 Sedan (G20 facelift 2022) stands apart from the standard BMW 3 Series with its bespoke Alpina engineering, including performance tuning, unique suspension calibrations, and styling cues. Alpina reworks the engine for increased output, integrates sportier drivetrain elements, and fits distinctive wheels and aerodynamic upgrades. Inside, upgraded materials and exclusive badging enhance the luxurious ambiance, offering a unique blend of Swiss performance craftsmanship and everyday usability.