July 29, 2026. Pamplona’s Regional Urban Transport Authority, Spain, has added 16 new hybrid buses with gas-electric engines to its fleet. These buses are powered by compressed natural gas (CNG) with a Guarantee of Renewable Origin (GO). They utilize the natural gas supply facility for the bus fleet located at the Regional Urban Transport Authority’s depot.
The 16 new units are Scania New City C 320 models: six are articulated, 18 meters long with 147 seats (39 of them seated), and the other ten are rigid, 12 meters long with 92 seats (24 of them seated).
It is worth recalling that the first 13 CNG-powered vehicles were incorporated in July 2022, following the approval in 2021 of the TUC’s Second Plan for Less Polluting Energy, aimed at the gradual replacement of polluting buses. Subsequently, more CNG-powered vehicles were added to the fleet: six in July 2023, six in October 2024, ten in July 2025, and six more in December 2025.
Once this project is completed, all organic waste will serve as the energy source to power the fleet of buses and waste trucks, before being composted for agricultural purposes.
The 16 new buses recently added to the fleet have 250 kW (340 hp) engines. All of them are equipped with air purification systems and security cameras. The new vehicles have a double ramp (manual + electric) for wheelchair access.
The purchase of these vehicles is part of the fleet renewal program approved jointly for 2026 and 2027, although deliveries have been made ahead of schedule. Each articulated bus cost €524,900 (excluding VAT) and each rigid bus cost €394,400 (excluding VAT), for a total acquisition cost of €7,093,400 (excluding VAT).
