Fifth generation / T180 Series (1990-1993)

The fifth generation Celica was introduced in September 1989 for the 1990 model year. The Celica received new organic styling, upgraded wheels and tires, and a more powerful GT-Four (US: All-Trac). Toyota engineers claimed that the round styling and lack of straight edges increased strength without adding weight. The styling was later copied by other manufacturers. Japanese domestic market (JDM) models were now S-R, Z-R, GT-R, Active Sports (with active suspension), and GT-Four. The S-R and Z-R were powered by a 3S-FE engine, while the GT-R and Active Sports came with a 3S-GE. The 3S-GTE in the GT-Four features an air-to-air intercooler and CT26 twin entry turbo to eliminate exhaust gas interference. The JDM GT-Four has 165 kW (221 hp) and 304 Nm (224 lb ft) of torque, a result of more aggressive ignition advance and ceramic turbine. The Full-time 4WD system in the GT-Four has viscous coupling limited slip center differential and Torsen rear differential.

The North American Celica had fixed door mirrors and amber front corner lights. All other models had folding mirrors and clear corner lights. Driver's side SRS Airbag is standard on all US models. The base model ST has 1.6 L 4A-FE, the GT and GT-S were powered by the 2.2 L 5S-FE. The 1.6L was similar to the one used in the Corolla. The GT-S was rated 5hp more than the GT at 135 bhp. The 2.2 L was designed for more low-end torque, which appealled to U.S buyers' preferences as opposed to the high revving engines of the past. This engine was similar to the Camry's engine except for the balance shafts. The All-Trac was also available. It was rated at 200 bhp and 200 lb-ft torque; an increase of 10 each from the previous model. The GT-S and all export market GT-Four are wide-body Liftbacks with flared fenders. The JDM GT-Four was also offered as normal body.

Trim levels for Europe are 1.6 ST-i, 2.0 GT-i 16, and GT-Four. The 2.0 GT-i 16 Cabriolet was offered only in certain European countries. For 1992, the wide body 2.0 GT-i 16 was offered in the Netherlands and Belgium. This is basically a GT-S with 3S-GE engine.

Models for Australia are SX Coupe, SX Liftback, GT-Four, and also 150 units limited edition GT-Four Group A Rallye. The Australian cars are less luxurious than JDM and North American models. Sunroof was only available as an option for SX. Initially, the GT-Four did not come with ABS, which became standard few months after the introduction. In 1993, the Limited Edition WRC Trophy model was offered in Australia. This is basically the SX with sport front seats from the GT-Four, cruise control, and special decals.

In August 1990, the wide body GT-Four A and Convertible were added into the Japanese lineup. Super Live Sound System with 10 speakers became standard on the GT-Four A and optional in other models except the S-R. The 20th Anniversary GT-R came in December 1990 to celebrate 20 years of Celica production. The Celica Convertible was built by American Sunroof Corporation (ASC) in California. It was offered as GT in USA with 5S-FE engine, or as Type G in Japan, and 2.0 GT-i 16 Cabriolet in Europe with 3S-GE engine. The JDM Convertible also has 4WS. The European Celica Cabriolet retained the old style front bumper for 1992, and received the facelift in 1993.

There are three different gearboxes for ST185 GT-Four. The E150F gearbox with 4.285 final gear ratio was installed in the JDM and All-trac. European and Australian models, as well as the RC/Carlos Sainz/Group A models, come with the E151F gearbox with 3.933 ratio. The JDM only GT-Four Rally, a limited edition lightweight rally version sold only in Japan (not to be confused with the Australian GT-Four Grp A Rallye model), has the E152F gearbox with close ratio on the 1st through 4th gear and 4.285 final ratio. It also comes with steel wheels and without air conditioning, power windows, or a power antenna. The early model is based on the normal body, and the facelift model is wide body with round fog lights. Also sold in Japan only was the GT-Four V. This is an economy version of normal body without alloy wheels, leather, or System 10, but still comes with fog lights, power windows, and optional sunroof. This was not sold in Australia.

Anti-lock brakes (ABS) were available on the GT-S all four years and was available on the GT from 1992 to 1993. ABS, Leather interior, sunroof, and System 10 Premium Sound System are optional on the GT-S and '90–'92 All-trac, and standard on '93 All-trac. With its sport-style interior, power-operated driver's seat, auto tilt-away steering wheel, and cruise control as standard equipment, the All-Trac (known as the GT-Four outside of the US) was the most expensive Celica yet. With a 2.0 L turbocharged 3S-GTE producing 149 kW (200 hp), it was also one of the most powerful Celicas made thus far.

The special rally edition of 5000 units was known as the GT-Four RC in Japan, Carlos Sainz (CS) in Europe (in honour of their famous WRC driver), or Group A Rallye in Australia. Special features include:

• a different intercooler (WTA as opposed to ATA) which Toyota Team Europe wanted so they could more easily tune their WRC car;
• different hood, the emphasis of which is to get rid of heat as fast as possible (instead of scooping in air, as is the case with the standard ST185 hood);
• more aggressively tuned ECU;
• different bumper that is much lighter than the standard one.

Out of 5,000 units, 1,800 were for the Japanese market, 3,000 were allocated to Europe, 150 in Australia, 25 in Singapore, and a few were exported to New Zealand and general markets.

In August 1991 for 1992 model year Toyota facelifted the Celica. Changes included:

• Stiffer anti roll bar was added and suspension spring rates were increased;
• New three-way catalytic converter;
• Improved gear linkage and a shorter gearshift;
• New 5S-FE, producing 100 kW (134 hp) and 196 Nm of torque;
• Front discs were now 277 mm and ventilated;
• The front-drive models (except for the North American GT-S, which used the same front bumper as the 4WD models) received a new style bumper;
• North American GT models received standard foglights;
• 15 in wheels on the Z-R, GT, and SX models fitted with Dunlop 205/55VR tires;
• Toyota (T) emblems on the hood and trunk;
• Taillights redesign (with smoke red frame);
• New round fog lights for JDM GT-Four A;
• Discontinued models: 4WS S-R, Active Sports, and normal body GT-Four.
• The 'A' was dropped from the 'GT-Four A' and the wide body turbo model was simply know as the GT-Four.
• The Cruise Control Package, SD Package and Luxury Package became optional on the JDM models.