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- Throughout our earlier dyno testing, the 2020 Toyota Supra made extra energy than marketed.
- The 2021 Toyota Supra will get a revised turbocharged 3.0-liter engine and a claimed larger output of 382 horsepower, 47 greater than final yr.
- We dyno-tested our long-term 2020 Toyota Supra again to again with the up to date 2021 Supra, and the outcomes have been spectacular.
A yr in the past, the Toyota Supra made its extremely anticipated return. In that yr, we have examined, shaken it down at Virginia Worldwide Raceway for our annual Lightning Lap competitors, and deemed it worthy of our 10Finest listing. We even have a 2020 Toyota Supra in our long-term fleet for a 40,000-mile check. Now we’ve additionally put the 2021 mannequin on the dyno and in contrast its outcomes to these of the 2020 Supra.
In our testing, the 2020 Supra hit 60 mph in simply 3.7 seconds and flew by means of the quarter-mile in 12.2 seconds at 113 mph. For 2021, the Supra has 47 extra horsepower, however with our check facility closed for the shelter-at-home order and unable to carry out instrumented testing, we determined to do the following smartest thing and take the 2020 Supra and the 2021 Supra to Livernois Motorsports and Engineering in Dearborn Heights, Michigan, for some back-to-back dynamometer testing to measure the distinction between the 2 Supras.
Dynamometers, or dynos as they’re typically identified, measure engine torque. When you measure the torque, you’ll be able to calculate the horsepower. The Dynojet dynamometer we used for this check measures the facility on the wheels, not like an engine dyno, which measures it on the engine’s flywheel. Our final go to to the dyno required us to make use of the all-wheel-drive setting on the dyno, because the Supra’s stability management system interfered when it seen that the rear wheels have been spinning wildly whereas the fronts remained stationary. Since then, we have found a Diagnostics mode with a Chassis Dyno perform that permits the automobile to be examined on a two-wheel dyno. Accessing the menu requires a little bit of a secret handshake, however it’s a straightforward one: push the Begin button 3 times in succession, and the Diagnostics mode menu will seem within the instrument cluster.
For this check, we chosen Guide mode and put the eight-speed computerized transmission in sixth gear. Sixth has a 1.00:1 ratio, which implies no torque multiplication. There are a few benefits to performing the check in a 1.00:1 ratio: it’s extra environment friendly, and it yields a pleasant lengthy pull to the facility peak. Throughout our checks, the height rpm in sixth fell about 500 rpm in need of the 7000-rpm redline, as a result of the top-speed governor cuts in at 162 mph. Luckily, the facility peak is from 5500 to 6500 rpm, so we’re assured these engines huffed out all the facility that they had.
First up: the 2020 Supra. Even with the power-sapping driveline losses of the transmission and rear axle in play, the dyno recorded 346 horsepower and 409 lb-ft of torque. That is an enchancment over the 339 horses we noticed with a unique Supra final yr. The additional energy is probably going attributable to manufacturing variation, however each 2020 fashions made greater than the 335 horsepower Toyota claims the engine makes on the crank. The previous pondering {that a} 15 p.c loss occurs within the drivetrain is outdated. Trendy drivetrains are way more environment friendly, and the losses are seemingly someplace between 5 to eight p.c.
Subsequent up on the dyno: the 2021 Supra. Engine revisions for this yr embody a brand new cylinder head and exhaust manifold, plus redesigned pistons. Toyota claims the turbocharged 3.0-liter inline-six produces 382 horsepower and 369 lb-ft of torque on the engine’s crankshaft. After just a few runs on the dyno, the 2021 engine put down 388 horsepower and 421 lb-ft on the wheels. Take away the driveline losses, and the engine seems to be able to 400 horsepower on the crank.
One caveat: the dynamometer measures torque on the wheels, however there isn’t any strategy to assure or verify that the transmission’s torque converter is totally locked or stays locked till the engine is spinning at excessive rpm. So the decrease rpm torque numbers could learn a bit excessive, since a spinning torque converter multiplies torque. Nonetheless, the back-to-back nature of our check does present that there is a actual, measurable distinction between the 2020 and the 2021. The dyno put the brand new engine’s benefit at 42 horsepower, so it is proper consistent with Toyota’s 47-hp declare. We will’t wait to see how that interprets to acceleration numbers—and we’ll get you these numbers as quickly as we will.
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