The highly-anticipated, next-generation Toyota Supra is still a few months away from breaking cover, but a leaked, internal BMW document just revealed what engines it will use. Posted by the folks over at the Supramkv forums, the document confirms that the Supra will get the same three engines as the upcoming Z4. The lineup will consist of a four-cylinder unit with two power ratings and a more powerful six-cylinder mill for the range-topping model. These engines carry the familiar x0i nomenclature seen on BMW models. Specifically, the four-cylinders are dubbed 20i and 30i, while the six-cylinder is codenamed the 40i.

The document also confirms that the Supra will go on sale in both Europe and the United States. In Europe, it will get all three engines, while the U.S. model will cross the pond with the six-cylinder and only the more powerful version of the four-banger. Another interesting detail that comes with the leak is that, apparently, the Supra won't get a manual transmission. This wouldn't be surprising here in North America, but as it turns out, European models are automatic too, no matter the engine.

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How Powerful Will it Be?

Unfortunately, the document doesn't include this kind of data, but we can work on estimates based on what those engines develop in current models. The 20i, which is a turbocharged, 2.0-liter four-cylinder, is already in use in cars like the 3 Series and 4 Series and cranks out 181 horsepower and 199 pound-feet of torque. Granted, the Supra may get a different setup than BMW, so these figures will change, but it seems enough for an entry-level model that's light enough to provide a solid power-to-weight ratio.

Next up, the 30i four-cylinder is a bit more powerful at 248 horsepower and 258 pound-feet. This should be enough to provide the thrills you'd expect from an icon like the Toyota Supra, but it remains to be seen if these figures won't go down a bit. With the 20i not offered in the U.S., the 30i will be the base model on this side of the pond.

Finally, the engine that BMW calls the 40i is a twin-turbo, 3.0-liter inline-six that cranks out a solid 335 horsepower. That's pretty exciting for the modern Supra, but again, these figures are subject to change depending on what modifications Toyota will make under the hood. But it will be enough that I'm positive that the Supra's engine won't be identical to the Z4's. It's safe to assume that the range-topping model will get more than 300 horsepower. Which is great news!

No Manual Transmission? For Real?

Well, if we are to trust the document, which clearly states that the Z4 will have both manual and automatic and the Supra just the automatic, the Japanese coupe won't get a three-pedal version. Of course, there is a chance that this document doesn't include the final data, but for the time being, it's what we have. Granted, if things remain like this, enthusiasts will be very disappointed, and I can understand that, but on the other hand, we need to see the advantages of having an automatic. With quicker shifts and better performance being only a couple of them.

What Else Do We Know?

If you're a fan of rear-wheel drive, then you'll be happy to know that both the Supra and Z4 will have a RWD configuration. And AWD won't be available as an option. What's more, it seems that the Supra won't get a hybrid AWD version as speculated in the past.

References

Toyota Supra

Read our speculative review on the Toyota Supra.

BMW Z4

Read our speculative review on the BMW Z4.