Single-donor roadster for self-build enthusiasts a class way to get two-seat lightweight fun

What is it?

MK, producers of the Caterham-esque Indy which we tried in bike-engined form the other week, has had a rather good idea.

With an £8533 self-build kit from MK and a single donor Mk2 Mazda MX-5, mechanically sound but bodily iffy examples of which are available very cheaply, you can put a lightweight roadster that looks like this together and on the road for less than £10,000 in around 250 hours.

MK will build it for you if you insist (complete from £18,995) but the idea that it’s for those who have more time than spare cash and want the hobby of making it themselves. 

This test example is, perhaps obviously, built by MK. But also comes with a turbo – you can buy that kit from £12,995 rather than £8500 – and it takes the MX-5’s 1.8-litre engine to 217bhp or more. This one has more. Given it weighs 600kg (take off 30kg for the non-turbo version), you can imagine that it’s quite fast. It’s also rather good fun. 

2 Mk indy hayabusa 2021 uk first drive review hero rear

What's it like?

The cosmetic finish is basic but mechanically things look rather well put together. The interior is basic but that’s fine. There’s a neat set of digital instruments, the seats slide and the steering column does not, but the driving position is good.

A hump in the bonnet means only the tall will see the nearside wheel but it’s not like this is a hard to place car. It’s even a little narrower than the Ford-based, bike-engined Indy I drove a few weeks ago owing to the Mazda’s narrower rear track.

So it feels very nimble and, as with any other MK I’ve driven, very well sorted. The steering, at two turns between locks, is direct but not nervous and really smooth and feelsome. Body control and ride composure are great and the handling balance, albeit in dodgy conditions, nicely judged.

10 Mk indy hayabusa 2021 uk first drive review dashboard

Back to top

Should I buy one?

MK thinks you it’s possible to buy a Mk2 MX-5 so cheaply that you’d get your money back on the parts you don’t use, so after fees and consumables you could put this car on the road for less than £15,000, or a non-turbo car for £10,000.

Given the fun in putting it together, there’s bags of appeal in that.

13 Mk indy hayabusa 2021 uk first drive review cornering front


Matt Prior

Matt Prior
Title: Editor-at-large

Matt is Autocar’s lead features writer and presenter, is the main face of Autocar’s YouTube channel, presents the My Week In Cars podcast and has written his weekly column, Tester’s Notes, since 2013.

Matt is an automotive engineer who has been writing and talking about cars since 1997. He joined Autocar in 2005 as deputy road test editor, prior to which he was road test editor and world rally editor for Channel 4’s automotive website, 4Car. 

Into all things engineering and automotive from any era, Matt is as comfortable regularly contributing to sibling titles Move Electric and Classic & Sports Car as he is writing for Autocar. He has a racing licence, and some malfunctioning classic cars and motorbikes. 

Join the debate

Add a comment…
si73 12 February 2021
Wish I could do something like this, but a decent garage space and tool set is required, which I, unfortunately do not have, oh and the spare cash, but what a fun hobby, MX5 mechanicals will be very reliable and will feel quite powerful in something as light as this I'd have thought.