The Ageing Motor

In 2024, the average age of cars on UK roads reached a record high of nine years and ten months.

That represents nearly the full decade mark, and highlights a gradual but significant ageing of the national car fleet.

So what does this say about new cars and the economy?

Feeling our age

Over the past decade, the average age climbed markedly—from around seven years and five months in 2015 to nearly ten years by the end of 2024.

Contributing factors include:

Rising new-car costs: Between 2009 and 2024, the average price of a new car soared by about 129%, making ownership less affordable.

Economic pressures and supply constraints: Events like the pandemic disrupted supply. At the same time, inflation and cost-of-living increases put pressure on consumers, pushing them to retain older vehicles rather than purchase new ones.

Improved build quality and reliability: Modern vehicles last longer and remain roadworthy well beyond what was common in earlier generations. A well-maintained older car can still perform reliably.

The average car age varies by fuel type:

Age Distribution 

According to the RAC, nearly 41% of cars on the road were over ten years old by the end of 2024, and up sharply from about 33% in 2015.

Other sources similarly report 43–44% of vehicles exceeding a decade in age, with one analysis showing that over 31% of UK cars in 2024 were over 12 years old.

Interestingly, some UK cities have notably older car fleets.

For example, in Norwich, the average car is nearly 12 years old, while Bournemouth, Southampton, Oxford, and several other cities also hover above 11 years.

It all suggests that economic, cultural, or infrastructural factors could be influencing how long people keep their vehicles.

Implications 

The ageing fleet poses environmental challenges, both positive and negative.

While older petrol and diesel cars tend to be significantly more polluting on a local level, keeping hold of older vehicles for longer cuts the substantial environmental impact of building a new car.

What’s more, the green technologies require rare earth minerals and resources that cause environmental damage, huge waste products and often exploitation of local populations.

However, the slow fleet turnover delays the transition to cleaner technologies like electric vehicles, which significantly affects local environments with roadside pollution, as well as adding to the global emissions problems.

As of the end of 2024, zero-emission vehicles, primarily battery-electrics, accounted for only 3.8% of all cars in use, though they contributed slightly more (5.3%) of mileage driven, according to the RAC Foundation. 

Other data places low-emission vehicles at roughly 3.7% BEVs and percentage rises in hybrids and plug-ins in that vicinity.

Going green

The UK’s car fleet is noticeably ageing, shaped by economic constraints, improved vehicle durability, and slower adoption rates of electrified transport.

COVID and the economic squeeze have certainly affected the investment in new vehicles. 

What’s more, the next new car is likely to be an EV as we all move voluntarily and mandatorily to zero emission vehicles.

Unfortunately for the buyer, these are generally more expensive.

It means many potential buyers and delaying the extra investment involved as long as possible.

Nearly half of all cars now surpass the ten-year mark.

While this trend could underscore the strength of modern automotive craftsmanship, it poses a clear hurdle to accelerating cleaner vehicle adoption.

Many complain that modern cars are designed to last little more than ten years, with hugely expensive replacement parts and difficulties in actually repairing them due to the way they are constructed.

However, while the zero emission mandate comes into force in a few years, the higher cost of EVs is likely to convince motorists to keep hold of their existing petrol and diesel models for as long as possible.

If policymakers want to prevent further rises in the age of the national fleet, they may need to recalibrate incentives, particularly for lower-income drivers, in order to catalyse the transition toward greener mobility.