Homogeneous charge compression ignition (HCCI) engine has fuel flexibility and can reduce NO_X and soot emissions. The present work aims to investigate the dual-fuel mode HCCI engine (DF–HCCI–E) performance and exhaust emissions for different fuel types, namely, Methanol, Ethanol, Propanol, and Butanol. The CI Engine is converted into a DF-HCCI engine by attaching the carburetor to the inlet manifold for experimentation. Royal Enfield bullet 500 cc, Mikarb type carburetor was attached outside the engine cylinder to prepare the homogenous air-fuel mixture. Alcohol-based fuel (low reactivity) was supplied through the carburetor at the suction stroke time. Diesel (high reactivity fuel) was injected to start the combustion at the end of the compression stroke. It is observed that the P100+D DF–HCCI–E is suitable for low and high load conditions, while B100+D DF–HCCI–E is suitable for mid-load conditions. Results showes that Methanol has the highest cooling potential and lowest NO_X emission compared to the rest of the fuels. And also, B100+D DF–HCCI–E reduced the highest smoke opacity for all load conditions compared to the rest of the ABF. Simple Additive Weighting (SAW) optimization was carried out, and it is concluded that P100+D has the best cumulative performance for low and high load conditions and M100+D has the poorest cumulative performance for all load conditions.