This is my third Citroen C4 Grand Picasso and I love them. I've also never had a problem with them, to me they're the best 7 seater out there! Plenty space and nice to drive, the 1.6HDI is the best. 4 days ago · Here are some of the issues that have been reported with the Citroen C4 Picasso: - Suspension problems: Some owners have reported a bumpy ride and suspension noise, which could be caused by worn or damaged suspension components. I'm angry that my 1.6HDi C4 Grand Picasso registered in January 2015, appears to only meet the Euro 5 emissions standards and not Euro 6 as will be required to avoid the charge.. However, I'm surprised that Citroen would have been selling vehicles so close to the September 2015 requirement date that did not meet the standard. The C4’s thick windscreen pillars can cause problems at junctions. Citroen Grand C4 Picasso, Honda Civic Tourer, Lexus IS 300h Citroen C4 Aircross. News. Citroen unveils C4 Aircross SUV dy7SHp.