West Midlands Railway’s new Cross City Line fleet of trains carried 12 million passengers in the first year of service.
The line, which connects Lichfield to Bromsgrove and Redditch via Birmingham, introduced the new Class 730/0 electric train fleet between March and September last year.
Customer satisfaction is said by WMR to be 19% higher than it was with the old fleet of trains that the news ones replaced.
Jonny Wiseman, WMR customer experience director, said: “This new fleet is the flagship for our £1billion investment into new trains and infrastructure.
“We want to provide the best possible passenger experience, and we are so pleased that the Class 730/0s are making such a positive impact on customer satisfaction already.
“The Cross City Line is the busiest commuter route outside of London, so boosting capacity was hugely important to us. The new 3-carriage trains run in pairs, comfortably offering space for over 1,000 people on every Cross City Line service.”
As well as the Cross City Line, Class 730 trains run on routes connecting central Birmingham with destinations including Walsall, Wolverhampton, Rugeley and Birmingham International.