Cars & Trucks

2021 Toyota Supra Seems Extra Highly effective Than 382-HP Ranking

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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 increased 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 record. We even have a 2020 Toyota Supra in our long-term fleet for a 40,000-mile take a look at. 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 way of the quarter-mile in 12.2 seconds at 113 mph. For 2021, the Supra has 47 extra horsepower, however with our take a look at 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 take a look at measures the facility on the wheels, in contrast to 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 operate that enables the automobile to be examined on a two-wheel dyno. Accessing the menu requires a little bit of a secret handshake, nevertheless it’s a simple one: push the Begin button thrice in succession, and the Diagnostics mode menu will seem within the instrument cluster.

    2020 and 2021 Toyota Supras.

    Marc UrbanoAutomotive and Driver

    For this take a look at, we chosen Guide mode and put the eight-speed automated transmission in sixth gear. Sixth has a 1.00:1 ratio, which suggests no torque multiplication. There are a few benefits to performing the take a look at in a 1.00:1 ratio: it’s extra environment friendly, and it yields a pleasant lengthy pull to the facility peak. Throughout our exams, 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. Happily, the facility peak is from 5500 to 6500 rpm, so we’re assured these engines huffed out all the facility they’d.

    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 distinct Supra final yr. The additional energy is probably going on account of 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. Fashionable drivetrains are way more environment friendly, and the losses are probably someplace between 5 to eight p.c.

    Dyno run of the 2020 Toyota Supra.

    Automotive and Driver

    Subsequent up on the dyno: the 2021 Supra. Engine revisions for this yr embrace 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.

    2021 toyota supra dyno run chart

    Dyno run of the 2021 Toyota Supra.

    Automotive and Driver

    One caveat: the dynamometer measures torque on the wheels, however there isn’t any solution to assure or verify that the transmission’s torque converter is absolutely locked or stays locked till the engine is spinning at excessive rpm. So the decrease rpm torque numbers may read a bit excessive, since a spinning torque converter multiplies torque. Nonetheless, the back-to-back nature of our take a look at 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 are able to’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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