The Proton S70 1.5T, launched in November 2023, represents Proton’s entry into the modern C-segment sedan market. Positioned as a mainstream offering, this variant aims to provide a balance of fuel efficiency, technology, and affordability for buyers in Proton’s primary market and potential export regions. The S70 is built upon a new platform for Proton, signifying a step towards more contemporary automotive engineering. This specific 1.5T DCT configuration serves as a key volume model within the S70 lineup, offering a compelling alternative to naturally aspirated and higher-performance variants.
Technical Specifications
| Brand | Proton |
| Model | S70 |
| Generation | S70 |
| Type (Engine) | 1.5T (150 Hp) DCT |
| Start of production | November, 2023 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 190 km/h (118.06 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 8.7 kg/Hp, 115.4 Hp/tonne |
| Weight-to-torque ratio | 5.8 kg/Nm, 173.8 Nm/tonne |
| Power | 150 Hp @ 5500 rpm |
| Power per litre | 101.6 Hp/l |
| Torque | 226 Nm @ 1750-4000 rpm (166.69 lb.-ft. @ 1750-4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | JLH-3G15T |
| Engine displacement | 1477 cm3 (90.13 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 93.2 mm (3.67 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5 l (5.28 US qt | 4.4 UK qt) |
| Coolant | 6.9 l (7.29 US qt | 6.07 UK qt) |
| Kerb Weight | 1300-1319 kg (2866.01 – 2907.9 lbs.) |
| Max. weight | 1714-1733 kg (3778.72 – 3820.61 lbs.) |
| Max load | 414 kg (912.71 lbs.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4602 mm (181.18 in.) |
| Width | 1809 mm (71.22 in.) |
| Height | 1466 mm (57.72 in.) |
| Wheelbase | 2627 mm (103.43 in.) |
| Front track | 1552 mm (61.1 in.) |
| Rear (Back) track | 1556 mm (61.26 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 11 m (36.09 ft.) |
| Climb angle | 21.8° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission DCT |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Torsion |
| 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 | 205/55 R16; 205/50 R17 |
| Wheel rims size | 16; 17 |
Introduction
The Proton S70 1.5T DCT is a four-door sedan designed to appeal to a broad range of consumers. Introduced in late 2023, it represents a significant upgrade in Proton’s product portfolio, moving towards more modern design and technology. The S70 is positioned within the competitive C-segment, facing rivals such as the Honda Civic, Toyota Corolla, and Hyundai Elantra. This 1.5T variant, equipped with a dual-clutch transmission (DCT), is intended to offer a balance between performance and fuel economy, making it a practical choice for daily commuting and family use.
Powertrain & Engine Architecture
At the heart of the S70 1.5T is the JLH-3G15T, a 1.5-liter turbocharged inline-three cylinder engine. This engine utilizes multi-port fuel injection and a single turbocharger with an intercooler to deliver 150 horsepower at 5500 rpm and 226 Nm (166.69 lb.-ft.) of torque between 1750 and 4000 rpm. The engine features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The DCT transmission, a seven-speed unit, is crucial to the driving experience, offering quicker shifts and improved fuel efficiency compared to a traditional automatic. The engine’s compact size and turbocharging contribute to its relatively good fuel economy and responsiveness.
Driving Characteristics
The S70 1.5T DCT delivers a competent, if not overly exciting, driving experience. The DCT transmission provides smooth and relatively quick gear changes, enhancing acceleration. While 150 hp isn’t a high output, the turbocharger provides a noticeable boost in power during overtaking maneuvers. The gear ratios are tuned for a balance of fuel efficiency and usability, with the lower gears providing adequate acceleration from a standstill, and higher gears optimized for highway cruising. Compared to potential higher-output variants (if offered), this version prioritizes fuel economy and ease of driving over outright performance. The front-wheel-drive configuration provides predictable handling, though it may exhibit some torque steer under hard acceleration.
Equipment & Trim Levels
The Proton S70 1.5T DCT typically comes standard with a range of features designed to enhance comfort and convenience. These include air conditioning, power windows, power door locks, and a basic audio system. Higher trim levels add features such as a touchscreen infotainment system with smartphone connectivity (Apple CarPlay and Android Auto), a reverse camera, and keyless entry. Interior upholstery is typically cloth in the base models, with leather options available on higher trims. Safety features generally include ABS, airbags, and stability control. Optional extras may include a sunroof, upgraded audio system, and various cosmetic enhancements.
Chassis & Braking
The S70 1.5T utilizes a McPherson strut suspension setup at the front, providing a comfortable ride and predictable handling. The rear suspension employs a torsion beam, a cost-effective solution that offers adequate performance for everyday driving. The braking system consists of ventilated discs at the front and solid discs at the rear, providing sufficient stopping power for the vehicle’s weight and performance. The electric power steering offers light and easy steering, making it suitable for urban driving conditions. Tire sizes typically range from 205/55 R16 to 205/50 R17, depending on the trim level.
Market Reception & Comparison
Initial market reception of the Proton S70 1.5T DCT has been generally positive, with reviewers praising its value for money and improved build quality compared to previous Proton models. The 1.5T engine is considered adequate for most driving situations, and the DCT transmission is a welcome addition. Fuel economy is a strong point, with the S70 achieving competitive figures in its class. Compared to other trims in the S70 lineup, the 1.5T DCT offers a sweet spot between performance and efficiency, appealing to a wider range of buyers. Some critics have noted that the interior materials could be of higher quality, and the ride can be somewhat firm on rough roads.
Legacy
The Proton S70 1.5T DCT represents a crucial step in Proton’s efforts to modernize its product lineup and compete more effectively in the global automotive market. The long-term reliability of the JLH-3G15T engine and DCT transmission remains to be seen, but early indications suggest that they are reasonably durable. As the S70 ages, it is likely to become a popular choice in the used car market, offering affordable and reliable transportation for budget-conscious buyers. Its success will depend on Proton’s ability to maintain quality control and provide adequate after-sales support.
