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Unassisted cold starts at ambient temperatures down to -29°C were achieved on neat alcohols in a cold room using a 4.8-L direct-injection stratified-charge (DISC) engine with late fuel injection. Starting times for the United Parcel Service (UPS) stratified-charge engine were less than three seconds at -29°C. Cold starts to -29°C also were achieved with gasoline and diesel fuel. Additionally, an SAE OW oil was used as a fuel and started at -18°C. A key to cold starting was achieving a minimum cranking speed (110 r/min) that ensured injection of fuel. Higher cranking speeds improved cold starting. Increased injection rate enhanced cold starting. For alcohol, the advantage of using a long-duration high-power ignition system was confirmed. The ability to fire and run was relatively independent of the wide range of fuel properties, including heat of vaporization, heat of combustion, and volatility.