Costa Coffee uses a variety of different coffee machines, depending on the location. For example, in the UK, they use a mix of Cimbali and Franke machines. However, in other countries they may use different brands. Some of the most popular Costa Coffee machines include the Cimbali M100, Franke A600 Plus and the Jura GIGA 5. If you're looking for a specific machine that Costa Coffee uses in your country, it's best to contact them directly to ask.