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Bio‐based and bio‐degradable plastics such as polybutylene succinate (PBS) have the potential to become sustainable alternatives to petrochemical‐based plastics. Polybutylene succinate can be produced from bio‐based succinic acid and 1,4‐butanediol using first‐generation (1G) or second‐generation (2G) sugars. A cradle‐to‐grave environmental assessment was performed for PBS products in Europe to investigate the non‐renewable energy use (NREU) and greenhouse gas (GHG) impacts. The products investigated are single‐use trays and agricultural film, with incineration, industrial composting and degradation on agricultural land as end‐of‐life scenarios. Both end products manufactured from fully bio‐based PBS and from partly bio‐based PBS (made from bio‐based succinic acid and fossil fuel‐based 1,4 butanediol) were analysed. We examine corn (1G) as well as corn stover, wheat straw …