2019 Toyota Supra: Specs leak offers an inside look

And it’s going to borrow heavily from BMW behind the wheel, for better or worse.

A parts catalogue posted on Supra MKV forums has revealed details about the spec of Toyota’s upcoming sports coupe.

The catalogue, which appears to be a BMW internal document, shows just how heavily Toyota has leant on its German development partner in the Supra’s cabin.

Before we get into that, though, the engines: on BMW’s documentation, the car is listed in 20i, 30i and 40i guises. In the Z4, the 20i/30i are powered by a four-cylinder turbocharged petrol engine making 145kW/320Nm and 190kW/400Nm respectively.

The M40i pumps out 250kW and 500Nm in the Z4, with those bigger outputs coming from a 3.0-litre displacement and six inline cylinders. No manual is listed on the BMW specification document, with the only transmission an automatic with the code GA8HP51Z, likely an eight-speed ZF unit.

According to the forum leaks, engines aren’t the only things the Supra will share with the Z4, and the wider BMW line-up for that matter.

For one, the steering wheel, column stalks, seat controls and gearshift will all be familiar to people who’ve driven a BMW over the past, say, five years. It’s a similar story with bits and pieces like the door locks and handles, electric parking brake and window switches.

Trainspotters will notice the climate control unit has been nicked from older BMW models, too.

A head-up display will be offered as an option, and there will be multiple seat designs on offer as well. They appear to be the same base seat, with different inserts and trim pieces to differentiate them.

Some people will love the idea of BMW touch points at Toyota prices, others will recoil at the notion the Supra has a heavy BMW influence. Pick a side, stick to it, let us know how you feel in the comments.

There will be three wheel choices, sitting alongside carbon-fibre mirror caps, carbon dashboard trim, an Alcantara headliner and all-weather floor mats on the options list.

The new Supra will (finally) be revealed at the 2019 Detroit motor show in January. We’ve already driven a pre-production prototype, though, and it’s a good thing already.