The UK new car market declined in 2019, with annual registrations falling for the third consecutive year. Since 2016, the UK new car market has fallen by some 380,000 units or -14.2%. Overall, 2.31 million units were registered in 2019, representing a fall of -2.4%, as the volatile market reacted to weak business and consumer confidence, general political and economic instability and confusion over Clean Air Zones. Private demand fell by -3.2% and was key to the overall decline, but a sharp -21.8% (or 135,000 unit) fall in diesel car volumes was also a major factor. Since 2016 diesel volumes have fallen by some 670,000 units.