2023 Toyota GR Corolla

To stiffen up the Corolla's body structure for GR duty, Toyota added underfloor bracing, additional weld points and more structural adhesive in key areas. The stiffer structure allowed Toyota's engineers to further dial in the car's suspension for responsive and accurate handling. (The Morizo Edition gets even more bracing and structural adhesive compared to the Core and Circuit Edition.)

But wait, there's more. The Circuit Edition and Morizo Edition get a roof made of forged carbon fiber to shave weight and reduce the car's center of gravity. Typically, a carbon-fiber roof is something reserved for a performance coupe like a BMW M4, not a workaday Toyota.

Incidentally, the Morizo Edition name has a bit of a backstory. Back in 2007, Akio Toyoda (then vice president of Toyota, now the president) wanted to branch out into more racing and to use the endeavor to hone the development of the automaker's cars. The effort wasn't officially approved by the company at the time, so a number of employees, including Akio Toyoda himself, went racing at the famous 24 Hours of Nürburgring endurance race.

Toyoda had received some criticism for the move, with some believing it was too dangerous for someone in his position. He decided to race under the name Morizo, kicking off an interesting era in which his true identity was neither confirmed nor denied by Toyota's media relations team.

Instead, the Corolla is a car that shines in the twisties. Our initial drive of the GR Corolla took place at Utah Motorsports Campus, a sinuous racetrack that exploits the handling characteristics of the GR to a T. We first drove a GR Corolla Circuit Edition and found that its front and rear limited-slip differentials definitely help in maximizing traction in high-speed cornering maneuvers. We set the AWD system's torque split to send equal amounts of power to the front and rear for this track test and found the car responds beautifully. The Michelin Pilot Sport 4S tires provide plenty of grip, too.

The Corolla begs to be driven at full-tilt as much as possible. The old motorsports adage of "It's more fun to drive a slow car fast than a fast car slow" definitely applies here. A talented driver will be able to exploit all available power on every straightaway but will never get to any crazy high speeds that require massive braking power. Still, the Corolla slows confidently thanks to the upgraded brakes (four-piston calipers up front with 14-inch disc brakes and two-piston calipers with 11.7-inch discs in the rear). Downshift and the computer will do a nice rev match for you; pleasingly, drivers who want to downshift the old-school way — the heel-toe shift — can turn the feature off.

The Morizo trim is a whole different animal thanks to its extra torque, lighter weight and stiffer chassis. It will carry a bit more speed in the corner thanks to the grip from the upgraded Michelin Pilot Sport Cup 2 tires, and acceleration in the straights is much quicker. It's a shame only 200 of these will be sold.

Core models offer a fabric interior, while the Circuit Edition has striking red accents and leather trim. Circuit Editions also have additional comfort features, some of which are available on the Core as options. On the whole, the GR Corolla interior is an upgraded and highly stylized version of the standard Corolla cabin.

The Morizo Edition is on a whole different level of interior. The GR engineers removed nearly 100 pounds versus the already focused Circuit Edition, for a curb weight of 3,186 pounds. How did they drop that much weight? Well, for starters they removed the rear seat. And the rear door speakers. And rear window regulators. Toyota notes that the rear seat removal does have a side benefit: There's plenty of room to store a set of tires in the back of the GR Corolla when you're attending a track day. The Morizo Edition also gets unique red and black Ultrasuede seats, which have holes for a racing harness.

Core
Comes well equipped with:

• 18-inch alloy wheels with Michelin Pilot Sport 4S tires
• Triple exhaust with brushed stainless steel tips
• High-performance brakes
• Driver-adjustable front-to-rear torque split for the AWD system
• Digital gauge cluster with GR Corolla-specific gauges
• Cloth seating
• Automatic climate control
• Height-adjustable driver's seat
• Leather-wrapped steering wheel
• 60/40-split fold-down rear seats
• 8-inch center touchscreen
• Six-speaker sound system
• Android Auto and Apple CarPlay smartphone integration

The GR Corolla also comes with:

• Blind-spot warning with rear cross-traffic warning (alerts you if a vehicle is in your blind spot during a lane change or while in reverse)
• Adaptive cruise control (maintains a driver-set distance between the GR Corolla and the car in front)
• Lane keeping assistance (steers the GR Corolla back into its lane if it begins to drift over the lane marker)

Options on the Core include:

• Performance package
• Painted brake calipers
• Front and rear limited-slip differentials (help maximize available traction during hard acceleration)
• Technology package
• Upgraded JBL audio system
• Navigation system (subscription-based)
• Wireless phone charging pad
• Cold Weather package
• Heated front seats
• Heated steering wheel

Circuit Edition
The Circuit Edition comes with the Core's three optional packages as standard equipment. It also has:

• Forged carbon-fiber roof
• Sport rear spoiler
• Special hood
• Simulated leather- and suede-trimmed front seats with additional bolstering
• Red accent stitching

Morizo
The most track-oriented GR Corolla by way of:

• 18-inch forged alloy wheels with wider Michelin Pilot Sport Cup 2 tires
• Additional body structure reinforcement
• Revised transmission gearing for quicker acceleration
• Simulated suede-wrapped steering wheel with red sight line
• Two-seater only; the back seat and other items have been removed to reduce weight