Despite the development of alternative technologies in the internal combustion engines, it is likely that the spark ignition engine will remain the dominant vehicle system for the next years. Also, the addition of these technologies able to enhance the internal combustion engines' performance in terms of both efficiency and environmental impact. This work presents the performance and emission results of an SI engine which was run on 30% H2+70% biogas blends at different engine speeds and excess air ratios. For this purpose, at the wide open throttle (WOT) condition, the engine was performed at 1000, 2000, and 3000 rpm. A Ford engine, a four-stroke cycle four-cylinder spark ignition engine with a bore of 80.6 mm, a stroke of 88 mm and a compression ratio of 10:1 was used in the experiments. Engine performance and emission values (CO, CO2, HC and NO) and cylinder pressure were measured. The experimental results were compared to 100% CH4, 30% H2+70% CH4, and 65% CH4+35% CO2 (Biogas) fuels at 2000 rpm. The results show that methane and biogas combustion improved with the addition of hydrogen.