Overview
- Horse Powertrain publicly detailed the B20 in early September 2026, saying the 2.0‑litre turbo can operate submerged to 1.1 metres under IPX8 rules and remains in commercial use on the Geely Galaxy Cruiser 700.
- The inline‑four weighs about 130 kg and is offered in outputs from roughly 188 to 248 hp with 221 to 280 lb‑ft of torque and is designed for HEV, PHEV and range‑extended EV roles.
- Horse attributes a claimed 48.4 percent brake thermal efficiency to Miller‑cycle operation, direct injection, high‑pressure injectors and high‑tumble intake ports that boost combustion and fuel economy.
- The company says waterproofing comes from a fully sealed structure, torsional vibration dampers, dedicated engine‑to‑transmission sealing and IPX8‑rated electrical components with sensors that limit power or change throttle response when submerged.
- The B20 highlights Horse’s Franco‑Chinese JV strategy and could push wider adoption of hybrid off‑road vehicles, though the waterproofing, long‑term durability and efficiency figures remain company‑reported and not independently validated.