"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."
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