The Toyota Mark II GX90 2.5i 24V Twin-turbo Automatic, produced between 1992 and 1996, represented a high-performance variant within the broader Mark II (GX90) lineage. This generation of the Mark II, built on the JZX90 chassis, was known for its sporty handling and powerful engine options. The 2.5i Twin-turbo model occupied the premium end of the spectrum, offering a significant performance upgrade over the naturally aspirated and single-turbo variants. It was positioned as a competitor to other Japanese sports sedans like the Nissan Skyline and Mazda RX-7, appealing to drivers seeking a blend of luxury and exhilarating performance.
The 1JZ-GTE Powertrain & Engine Architecture
At the heart of the GX90 2.5i Twin-turbo was the 1JZ-GTE engine, a 2.5-liter (2492 cc) inline-six cylinder powerplant. This engine was a cornerstone of Toyota’s performance offerings during the early to mid-1990s. The 1JZ-GTE featured a cast iron block and an aluminum cylinder head, incorporating a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder. This configuration allowed for excellent breathing and high-RPM performance. The engine’s key feature, of course, was its twin turbocharger setup. Sequential turbocharging was employed, utilizing a smaller turbocharger for quick spool-up and improved low-end response, and a larger turbocharger to deliver substantial power at higher engine speeds.
Fuel delivery was managed by a multi-port fuel injection system, ensuring precise fuel metering for optimal combustion. The 1JZ-GTE boasted a compression ratio of 9:1. The engine produced 280 horsepower at 6200 rpm and 378 Nm (278.8 lb-ft) of torque at 2400 rpm. The engine oil capacity was 5.4 liters (5.71 US quarts / 4.75 UK quarts), and Toyota specified a particular oil grade for optimal performance and longevity.
The engine was mated to a 4-speed automatic transmission. While not as engaging as a manual gearbox for some enthusiasts, the automatic transmission offered convenience and smooth shifts, making it suitable for both daily driving and spirited performance. The transmission was designed to handle the substantial power output of the 1JZ-GTE, featuring robust internal components and a torque converter optimized for quick acceleration.
Driving Characteristics
The GX90 2.5i Twin-turbo Automatic delivered a distinctly different driving experience compared to its naturally aspirated or single-turbo siblings. The twin-turbo setup eliminated much of the turbo lag associated with earlier turbocharger designs, providing a broad and usable powerband. Acceleration was brisk, with the car feeling significantly faster than its base-model counterparts. The automatic transmission, while smooth, did slightly diminish the sense of control compared to a manual transmission. However, the transmission’s programming was geared towards performance, holding gears longer and downshifting promptly when needed. The rear-wheel-drive configuration contributed to a balanced chassis and predictable handling, making the car enjoyable to drive on winding roads. The weight-to-power ratio of 5.2 kg/hp and weight-to-torque ratio of 3.8 kg/Nm further emphasized the car’s performance capabilities.
Equipment & Trim Levels
The 2.5i Twin-turbo Automatic trim level was generally well-equipped, reflecting its position as the flagship Mark II variant. Standard features typically included power windows, power locks, power steering, air conditioning, and a high-quality audio system. Interior upholstery was typically a combination of cloth and leather, with supportive and comfortable seats. The dashboard layout was functional and driver-focused, with clear instrumentation and easy-to-reach controls. Optional extras could include a sunroof, upgraded audio systems, and various cosmetic enhancements. The GX90 also featured ABS (Anti-lock Braking System) as a standard safety feature.
Chassis & Braking
The GX90 Mark II featured a robust chassis with a multi-link suspension system at both the front and rear. This suspension design provided a good balance between ride comfort and handling precision. The front suspension utilized several levers and rods, while the rear suspension also employed a multi-link setup to maintain tire contact and minimize body roll. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The steering system was a rack and pinion type with hydraulic power assistance, offering precise steering feel and responsiveness. The vehicle was typically equipped with 205/55 R16 or 225/50 R16 tires mounted on 16-inch wheels.
Market Reception & Comparison
The Toyota Mark II GX90 2.5i Twin-turbo Automatic received generally positive reviews from automotive critics. It was praised for its powerful engine, responsive handling, and comfortable interior. However, some critics noted that the automatic transmission detracted slightly from the overall driving experience. Compared to other trims in the Mark II lineup, the 2.5i Twin-turbo offered a significant performance advantage. The naturally aspirated models were more fuel-efficient but lacked the exhilarating acceleration of the turbo variants. The single-turbo models offered a compromise between performance and fuel economy, but the twin-turbo setup provided the highest level of power and responsiveness. Fuel consumption figures were 10.99 l/100 km (21.4 US mpg / 25.7 UK mpg) in urban conditions, 6 l/100 km (39.2 US mpg / 47.1 UK mpg) extra urban, and 8.5 l/100 km (27.7 US mpg / 33.2 UK mpg) combined.
Technical Specifications
| Brand | Toyota |
| Model | Mark II |
| Generation | Mark II (GX90) |
| Type | 2.5i 24V Twin-turbo (280 Hp) Automatic |
| Start of production | 1992 |
| End of production | 1996 |
| Engine Model/Code | 1JZ-GTE |
| Engine displacement | 2492 cm3 (152.07 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 86 mm (3.39 in.) |
| Piston Stroke | 71.5 mm (2.81 in.) |
| Compression ratio | 9:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger (Twin) |
| Valvetrain | DOHC |
| Power | 280 Hp @ 6200 rpm |
| Torque | 378 Nm @ 2400 rpm (278.8 lb.-ft. @ 2400 rpm) |
| Kerb Weight | 1450 kg (3196.7 lbs.) |
| Max. weight | 1725 kg (3802.97 lbs.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4750 mm (187.01 in.) |
| Width | 1750 mm (68.9 in.) |
| Height | 1390 mm (54.72 in.) |
| Wheelbase | 2730 mm (107.48 in.) |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission |
Legacy
The Toyota Mark II GX90 2.5i Twin-turbo Automatic has developed a strong following among enthusiasts. The 1JZ-GTE engine is renowned for its durability and tunability, making it a popular choice for modifications and performance upgrades. While the car is now over two decades old, well-maintained examples are still sought after by collectors and drivers who appreciate its unique blend of performance, luxury, and Japanese automotive engineering. The automatic transmission, while not universally preferred, has proven to be reliable. The GX90 2.5i Twin-turbo remains a respected and iconic vehicle in the world of Japanese performance sedans, and continues to hold its value in the used car market.
