Capital comes ahead of Naples and Milan.

Rome has been declared the most congested city in Italy, according to a report by traffic navigator TomTom which based its results on data recorded throughout 2014.

The capital was awarded the unenviable top spot in Italy ahead of Milan, in second place, and Naples, third.

The study found that Rome has a 38 per cent congestion level, revealing that, on average, drivers experienced 24 minutes per hour stuck in traffic during rush hour, with commuters spending an average of 93 hours sitting in traffic jams in 2014.

Out of the 146 cities surveyed for congestion in the TomTom annual report, Rome comes 13th in the world rankings, while the planet's most traffic-clogged city is Istanbul (58 per cent congestion), followed by Mexico City (55 per cent) and Rio de Janiero (51 per cent).