Against a claimed fuel economy of 4.9 litres per 100km, we've logged an indicated 6.8L/100km. Good, but not great, and a number that would be improved with more judicious use of the throttle. This Reliability rating 92.7%. Citroen's Grand C4 Picasso has enough space to transport seven people in comfort, plus it has stylish looking bodywork and reasonable handling. Is a used Citroën C4 hatchback reliable? What Car? has a buying service. Find out more. Our cars: Citroen Grand C4 Picasso, Honda Civic Tourer, Lexus IS 300h. News. Our cars: Citroen Grand C4 "The Citroen C4 is a comfortable family hatchback with modern, fashionable styling" These are the most reliable family cars according to our latest Driver Power survey. Citroen e-C4 X review. Is the Citroen C4 a good car? The Citroen C4 is a good, comfortable and even eye-catching family hatchback, but not the best option for those prioritising practicality. Is the Citroen C4 reliable? We have a Peugeot 5008 with the 1.2 130hp turbo engine and torque converter auto gearbox and love it. Brilliant car and reasonable economy, we get around 37-40mpg day to day and up to 49mpg on longer motorway journeys. That's brilliant thanks. I'm looking at getting rid of the 7 seater 2.0. Citroen C4 Picasso - Reliability - Andrew-T. Most cars of most makes are pretty reliable. Statistically some makes are more reliable than others, and when you buy a 6-year-old car you have to take your chances, using your best skill and judgment. Choosing the make with best reliability stats will be no guarantee, you can still be unlucky. "The Citroen Grand C4 SpaceTourer is a comfortable, spacious and efficient car that proves you don’t need an SUV for family life" The car has been incredibly reliable for the majority of its tUeoSB.