Overview
- Bovensiepen unveiled the 05 GT on Monday, presenting a coachbuilt version of the G90 M5 Touring with a new front and rear, 21‑inch forged wheels, bespoke Pirelli tires and design work led by Frank Stephenson.
- The company says revisions to the S68 4.4‑litre twin‑turbo V8 plug‑in hybrid — including a revised intake, larger‑flowing Akrapovič titanium exhaust and ECU tuning tested at Papenburg and Nardò — raise combined output to roughly 790–801 hp and about 1,100 Nm with a claimed 0–100 km/h time under 3.6 seconds.
- Bovensiepen has changed suspension hardware with modified support bearings, Eibach springs, retuned adaptive dampers and a strut‑tower brace to sharpen handling while retaining ride comfort.
- Pricing for Germany starts at €198,900 including VAT and extensive Lavalina leather and bespoke options are offered, with Bovensiepen planning first customer deliveries in Q4 2026.
- Production will be limited to a small annual run — outlets report between about 100 and 200 units per year — and the model positions Bovensiepen as a subtle, high‑luxury successor in spirit to Alpina that targets buyers wanting exclusivity and refined performance.