The Alpina B5 and D5 (G30) are high-performance executive cars produced by Alpina, introduced at the 2017 Geneva Motor Show. The third generation of the B5, it is based on the BMW 5 Series (G30) and is available in both saloon and wagon bodystyles. The B5 model is derived from the BMW M550i and uses a modified 4.4-liter N63 twin-turbocharged V8 engine known as the N63TU2. Noteworthy modifications to the engine include a redesigned cold air intake system, cooling system, higher compression Mahle pistons, twin-scroll Garrett turbochargers, a larger intercooler, new NGK spark plugs, and an Alpina-specific ECU. Additionally, the vehicle features a lightweight exhaust system to reduce back pressure for enhanced performance.

Key Points:
1. The Alpina B5 and D5 (G30) are high-performance executive cars unveiled at the 2017 Geneva Motor Show.
2. Third generation of the B5 model succeeding the Alpina B5 (F10) and based on the BMW 5 Series (G30).
3. Available in both saloon and wagon bodystyles.
4. Modified 4.4-liter N63 twin-turbocharged V8 engine known as the N63TU2 powers the B5 model.
5. Engine enhancements include redesigned cold air intake system, cooling system, Mah

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