In 2016, a record 2.7 million new cars were bought in the UK, the fifth straight year of rising sales. However, the amount we're borrowing to pay for them is increasing too and some experts are saying this means that trouble could be around the corner.

And it may be too late to slam on the brakes.

Borrowing to buy

Buying a car is not exactly a cheap exercise.

According to the Finance & Leasing Association, motorists in the UK borrowed a mammoth £31.6 billion to fund car purchases last year, also a new record.

And that should be a ‘flashing light’, according to the investment bods at Schroders.

Fund manager Andrew Evans, writing on the firm’s blog, pointed out that borrowing on a depreciating asset, like a car, is a “very bad idea”.

He added: “One of the big issues with car financing is the reliance the whole system places on the value of second-hand cars.

"As soon as this value drops, it means somebody is missing out and – whether that is the car-financing company or the person who has purchased the car – that means there is a serious level of fragility built into the system.”

Still, so long as everybody keeps up with their repayments, everything will be fine and dandy right?

It’s time to talk about America

There is another problem here, and it’s found in the US.

Car sales – and loans – have also rocketed over the other side of the Atlantic, but so have missed payments on those loans.

The Federal Reserve Bank of New York says that as many as six million Americans are at least 90 days behind on their car loans.

It has previously said: “The worsening in the delinquency rate of sub-prime auto loans is pronounced, with a notable increase during the past few years.”

What’s more, these loans are being packaged up as asset-backed securities, given ratings by credit rating agencies and then sold onto investors.

Stop us if you think you’ve heard this one before...

Is this the next crash?

Could this cause a stock market crash? (Image: Shutterstock)

Honestly, it’s difficult to say right now. First of all, let’s be clear; cars and houses are very different as assets; banks are simply nowhere near as exposed on car loans as they were on mortgages back in 2007 when the entire financial system crashed.

And industry figures here are at pains to point out that defaults on car loans in the UK are very small, certainly compared to the States.

But if it does all come crashing down, it will hurt.

Manufacturers will take a big hit, and as the Bank of England pointed out in a recent article, “the car industry’s fortunes play an important part in the stability of the broader economy” as it accounts for over 4% of GDP.

Here is how the Bank concluded that article: “Industry innovation in the area of finance has been great news for consumers — a greater percentage of us can now drive the more expensive car brands — but as the industry constantly chases targets, volume and market share, it becomes increasingly vulnerable to shocks.”

Given the events of the last 18 months, who would honestly suggest there aren’t further economic shocks on the horizon?

If there are, it may not just be those who have overstretched for that shiny new motor that feel the pain.

[Read more: The financial jargon that confuses many and what it actually means]