Cars that were not necessarily loved or considered the peak of automotive excellence when they were released are now selling for many times their original cost as savvy investors look to cash in.

In some cases, vehicles that would have sold new for a few thousand dollars in the 1970s, 80s or 90s are now attracting well over $100,000 with quite a number pushing even higher.

Even the likes of a Holden Kingswood can fetch around $50,000, a Ford Cortina $70,000, and a Ford Escort around $30,000.

Vintage four-wheel-drives are also attracting big dollars, with something like a 1971 Toyota Landcruiser FJ40 worth almost $120,000.

Right in the thick of the action is Mark Haybittle, a veteran classic car investor and managing director with Supercar Secrets, a specialist agency with an established and exclusive network of private collectors.

Mr Haybittle said things could have gone a number of ways with the onset of the pandemic last year, including the potential for values to slide.

But as it turned out, the opposite has occurred with prices in Australia rising by 40 per cent or more.

"Aussies have been redirecting the cash they might otherwise have spent on holidays into this booming market of classic cars, and reaping the benefits," he said.

"They tell us what they have to spend and we get them into cars that will boom in six to nine months.

"From the customer's point of view, they have the satisfaction of investing smart and with their heart."

And for Mr Haybittle, a longstanding car enthusiast, that's also part of the attraction.

As well as buying and selling vehicles, his group handles any necessary restoration work, returning classic models back to showroom condition.

"If you look out the window now, everything you see on the road looks exactly the same," he said.

"They're all white or silver. There's no shape change, there's no differentiation between cars these days."

By contrast, the cars his collectors are after "all have a story to tell", something that sets them apart, offering a glimpse of the "excitement of the past".

So what's the secret to picking the next big thing?

Provenance is important, tracking the car's ownership history, but other things are crucial, including the right engine size, transmission and even the right interior and exterior colour combinations.

Clearly, the number produced is also a key. The fewer left on the roads, the more likely the prices are to skyrocket.

While some people are in it largely for the healthy returns, and some are true car lovers who relish the opportunity to take their investments out on the road, Mr Haybittle said many of his customers think of themselves as custodians.

"It's like a piece of art," he said.

"You're only the custodian for the period of time it's with you and then it moves on to somebody else."

But as the market continues to boom, institutional investors, including superannuation funds, are also getting involved.

With impressive returns for the past 30 years, Mr Haybittle said he believed values would continue to grow, even amid a falling number of cars available within Australia.

That's also where the pandemic has helped. With somewhat stagnant returns in Europe and elsewhere, making it more attractive to bring in vehicles from overseas.

His group currently handles about 200 cars each year and he admits to "getting a few wrong".

"But when we've got them wrong, all it means is that they haven't gone up as much as we anticipated, but they haven't gone down," Mr Haybittle said.

Australian Associated Press