The Proton X90 1.5 TGDi (177 Hp) Mild Hybrid DCT is a seven-seat sport utility vehicle (SUV) introduced by Proton in May 2023. Representing a significant step forward for the Malaysian automaker, the X90 is positioned as a family-oriented vehicle offering a blend of space, technology, and fuel efficiency. This particular variant, equipped with a 1.5-liter turbocharged gasoline engine coupled with a 48V mild hybrid system and a 7-speed dual-clutch transmission (DCT), occupies a mid-range position within the X90 lineup, offering a balance between performance and economy. The X90 is built upon a dedicated SUV platform and aims to compete with established players in the Southeast Asian market.
Technical Specifications
| Brand | Proton |
| Model | X90 |
| Type (Engine) | 1.5 TGDi (177 Hp) Mild Hybrid DCT |
| Start of production | May, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 6-7 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 9.8 kg/Hp, 102.3 Hp/tonne |
| Weight-to-torque ratio | 6.8 kg/Nm, 147.4 Nm/tonne |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 14 Hp |
| Electric motor Torque | 52 Nm (38.35 lb.-ft.) |
| Electric motor location | Integrated into the transmission |
| Power | 177 Hp @ 5500 rpm |
| Power per litre | 119.8 Hp/l |
| Torque | 255 Nm @ 1500-4000 rpm (188.08 lb.-ft. @ 1500-4000 rpm) |
| Engine layout | Front, Transverse |
| Engine displacement | 1477 cm3 (90.13 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Kerb Weight | 1730-1743 kg (3814 – 3842.66 lbs.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Length | 4830 mm (190.16 in.) |
| Width | 1900 mm (74.8 in.) |
| Height | 1764 mm (69.45 in.) |
| Wheelbase | 2805 mm (110.43 in.) |
| Minimum turning circle | 11.8 m (38.71 ft.) |
| Drivetrain Architecture | Front wheel drive, MHEV |
| Number of gears | 7 |
| Gearbox type | Automatic transmission DCT |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/55 R18; 235/50 R19 |
| Wheel rims size | 18; 19 |
Powertrain & Engine Architecture
The heart of the Proton X90 1.5 TGDi is a 1.5-liter inline-three cylinder turbocharged gasoline engine, designated as the JX55. This engine utilizes direct fuel injection and a double overhead camshaft (DOHC) valvetrain to optimize combustion efficiency and power delivery. The turbocharger, coupled with an intercooler, helps to mitigate turbo lag and maintain consistent boost pressure across the engine’s operating range. The engine’s output of 177 horsepower at 5500 rpm and 255 Nm (188 lb-ft) of torque between 1500-4000 rpm is augmented by a 48V mild hybrid system. This system incorporates a small electric motor integrated into the transmission, providing a power boost during acceleration and enabling a start/stop system for improved fuel economy. The 7-speed dual-clutch transmission (DCT) offers quick and seamless gear changes, contributing to a more engaging driving experience. The DCT was chosen for its efficiency and responsiveness compared to a traditional automatic transmission.
Driving Characteristics
The Proton X90 1.5 TGDi delivers a reasonably refined driving experience. The mild hybrid system provides a noticeable boost during initial acceleration, helping to overcome the inherent limitations of a smaller displacement engine. The DCT transmission shifts quickly and smoothly, although some drivers may detect slight hesitation at low speeds. While not a performance-oriented SUV, the X90 offers adequate power for everyday driving and highway cruising. The front-wheel-drive configuration provides predictable handling, and the suspension is tuned to prioritize comfort over sporty dynamics. Compared to potential higher-output variants (should Proton offer them), this 1.5 TGDi version prioritizes fuel efficiency and affordability, making it an attractive option for budget-conscious buyers.
Equipment & Trim Levels
The Proton X90 1.5 TGDi typically comes standard with a comprehensive suite of features. These include LED headlights, a large touchscreen infotainment system with smartphone connectivity (Apple CarPlay and Android Auto), a digital instrument cluster, and a range of active safety features such as ABS, electronic stability control, and multiple airbags. Interior appointments generally include fabric or leatherette upholstery, depending on the specific trim level. Optional extras may include a panoramic sunroof, premium audio system, and advanced driver-assistance systems (ADAS) like adaptive cruise control and lane-keeping assist. The trim level dictates the level of interior refinement and the availability of convenience features.
Chassis & Braking
The Proton X90 utilizes an independent McPherson strut suspension setup at the front and an independent multi-link spring suspension with a stabilizer bar at the rear. This configuration aims to provide a comfortable ride while maintaining reasonable handling characteristics. The braking system consists of ventilated discs at the front and solid discs at the rear, providing adequate stopping power for the vehicle’s weight class. The electric power steering system offers light and precise steering feel, making it easy to maneuver in urban environments.
Market Reception & Comparison
The Proton X90 has been generally well-received in the Malaysian market, praised for its spacious interior, modern features, and competitive pricing. Critics have noted the engine’s adequate performance, although some have expressed a desire for a more powerful engine option. Fuel economy is a strong point, thanks to the mild hybrid system and efficient DCT transmission. Compared to other SUVs in its class, the X90 offers a compelling value proposition, particularly considering its level of standard equipment. Its main competitors include models from Perodua, Honda, and Toyota, each offering different strengths and weaknesses in terms of performance, features, and price.
Legacy
As a relatively new model, the long-term reliability of the Proton X90 1.5 TGDi powertrain remains to be fully established. However, Proton has been making strides in improving the quality and reliability of its vehicles in recent years. The 1.5 TGDi engine, while relatively new to Proton, has been used in other Geely-based models, providing some indication of its potential durability. In the used car market, the X90 is expected to hold its value reasonably well, particularly if it proves to be a reliable and fuel-efficient vehicle. Its spacious interior and family-friendly features should also contribute to its desirability in the second-hand market.
