"At the beginning it was difficult for me and the team to set out a main objective as we didn't know the championship and Citroen was coming from rallying," Lopez told AUTOSPORT.
"It has been much better than I expected. I ended having broken the record for wins and points in a season, against very experienced guys, including Yvan who has been the reference driver in the series for many years.
"It will be difficult for me to equal this [in 2015]; it has been my best [performance in a] championship in my career.
"Of course I had the best car on the grid, but I also had three team-mates and this makes the value of what I have done better."
Volvo gave the World Touring Car Championship a major boost when it announced it would enter the series, but its ambitions don't stop there. JACK COZENS examines its programme, the S60 and what its arrival means for the WTCC
The 2012 World Touring Car champion says he never had the money to race cars. Yet 2015 is his 11th season in the WTCC. He talks STUART CODLING through his journey from motorsport fan to paid professional - for little more than £100,000