The Chevrolet Onix II Plus, specifically the 1.0T (115 hp) Ethanol Automatic variant introduced with the 2025 facelift, represents a significant offering in the South American subcompact sedan market. Production began in July 2025, building upon the success of the Onix II platform (launched in 2019). This model is primarily targeted at buyers seeking a fuel-efficient, technologically equipped, and affordable sedan, particularly in Brazil where flex-fuel capability (gasoline and ethanol) is highly valued. The Onix II Plus sits in the mid-range of the Onix lineup, offering a balance between performance and economy, positioned above the base 1.0L naturally aspirated models and below the more powerful 1.2L turbo options.
Technical Specifications
| Brand | Chevrolet |
| Model | Onix |
| Generation | Onix II Plus (facelift 2025) |
| Type (Engine) | 1.0T (115 Hp) Ethanol Automatic |
| Start of production | July, 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 8.2 l/100 km (28.7 US mpg, 34.4 UK mpg, 12.2 km/l) |
| Fuel consumption (economy) – urban (Ethanol – E100) | 11.8 l/100 km |
| Fuel consumption (economy) – extra urban | 6.3 l/100 km (37.3 US mpg, 44.8 UK mpg, 15.9 km/l) |
| Fuel consumption (economy) – extra urban (Ethanol – E100) | 8.9 l/100 km |
| CO2 emissions | 118 g/km |
| CO2 emissions (Ethanol – E100) | 113 g/km |
| Fuel Type | Petrol / Ethanol – E100 |
| Acceleration 0 – 100 km/h | 10.5 sec |
| Acceleration 0 – 62 mph | 10.5 sec |
| Acceleration 0 – 60 mph | 10 sec (Calculated) |
| Maximum speed | 180 km/h (111.85 mph) |
| Weight-to-power ratio | 9.4 kg/Hp, 106.3 Hp/tonne |
| Weight-to-torque ratio | 6.8 kg/Nm, 147.9 Nm/tonne |
| Power | 115 Hp @ 5500 rpm |
| Power per litre | 115.1 Hp/l |
| Torque | 160 Nm @ 2000-4500 rpm (118.01 lb.-ft.) |
| Torque (Ethanol – E100) | 165 Nm @ 2000-4500 rpm |
| Maximum engine speed | 6000 rpm |
| Engine layout | Front, Transverse |
| Engine displacement | 999 cm3 (60.96 cu. in.) |
| Number of cylinders | 3 |
| Engine configuration | Inline |
| Cylinder Bore | 74 mm (2.91 in.) |
| Piston Stroke | 77.49 mm (3.05 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 3.75 l (3.96 US qt, 3.3 UK qt) |
| Coolant | 5.4 l (5.71 US qt, 4.75 UK qt) |
| Kerb Weight | 1082-1117 kg (2385.4 – 2462.56 lbs.) |
| Max. weight | 1457-1492 kg (3212.14 – 3289.3 lbs.) |
| Max load | 375 kg (826.73 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Fuel tank capacity | 44 l (11.62 US gal, 9.68 UK gal) |
| Length | 4480 mm (176.38 in.) |
| Width | 1746 mm (68.74 in.) |
| Width including mirrors | 2044 mm (80.47 in.) |
| Height | 1473-1474 mm (57.99 – 58.03 in.) |
| Wheelbase | 2600 mm (102.36 in.) |
| Front track | 1500 mm (59.06 in.) |
| Rear (Back) track | 1504 mm (59.21 in.) |
| Front overhang | 888 mm (34.96 in.) |
| Rear overhang | 992 mm (39.06 in.) |
| Ride height (ground clearance) | 157 mm (6.18 in.) |
| Drag coefficient (Cd) | 0.311-0.320 |
| Minimum turning circle | 10.6 m (34.78 ft.) |
| Approach angle | 14° |
| Drivetrain Architecture | ICE, Front Wheel Drive |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Independent, McPherson with coil spring and anti-roll bar |
| Rear suspension | Semi-independent, coil spring, Torsion |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 185/65 R15; 195/55 R16 |
| Wheel rims size | 6J x 15; 6.5J x 16 |
Powertrain & Engine Architecture
The heart of this Onix variant is the GM-developed 1.0L turbocharged three-cylinder engine, designated as the X10XE. This engine utilizes a single-scroll turbocharger and intercooler to boost power output. The engine features multi-point fuel injection and a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. Crucially, the engine is designed to run efficiently on both gasoline and ethanol (up to 100% E100), a key feature for the Brazilian market. The automatic transmission is a six-speed unit, providing smooth shifts and contributing to the vehicle’s ease of driving. The transmission is tuned for fuel efficiency and comfortable cruising rather than outright performance.
Driving Characteristics
The 115 hp and 160 Nm (118 lb-ft) of torque delivered by the 1.0T engine, coupled with the six-speed automatic, provide adequate performance for everyday driving. Acceleration from 0-60 mph takes around 10 seconds, and top speed is rated at 112 mph. While not sporty, the engine offers sufficient power for highway merging and overtaking. The automatic transmission is programmed with relatively long gear ratios, prioritizing fuel economy. Compared to the manual transmission versions, the automatic sacrifices some responsiveness, but offers greater convenience. Higher-output versions of the Onix, such as those equipped with the 1.2L turbo engine, offer significantly more spirited performance.
Equipment & Trim Levels
The 1.0T Automatic trim typically includes standard features such as air conditioning, power windows and locks, a touchscreen infotainment system with smartphone integration (Apple CarPlay and Android Auto), and basic safety equipment like dual airbags and ABS. Higher trim levels add features like alloy wheels, a rearview camera, parking sensors, and more advanced safety systems. Interior upholstery is typically cloth, with options for leatherette available on higher trims. The dashboard layout is modern and functional, with a focus on ease of use.
Chassis & Braking
The Onix II Plus utilizes a front-wheel-drive layout with an independent McPherson strut suspension in the front and a semi-independent torsion beam suspension in the rear. This setup provides a comfortable ride quality, suitable for Brazilian road conditions. Braking consists of ventilated discs in the front and drum brakes in the rear. ABS (Anti-lock Braking System) is standard. The chassis is tuned for stability and ride comfort, rather than aggressive handling.
Market Reception & Comparison
The Chevrolet Onix has consistently been one of the best-selling cars in Brazil, and the 1.0T Automatic variant is a popular choice for buyers seeking a balance of fuel efficiency, technology, and affordability. Critics generally praise the Onix for its spacious interior, comfortable ride, and fuel economy. Compared to competitors like the Fiat Argo and Hyundai HB20, the Onix offers a competitive package, particularly in terms of technology and fuel efficiency. The automatic transmission, while not the sportiest, is well-regarded for its smoothness and ease of use. Fuel economy is a key selling point, with the ethanol-fueled version offering competitive running costs.
Legacy
The 1.0T engine, while relatively new, has proven to be generally reliable. The six-speed automatic transmission is also considered durable. As a relatively recent model (2025), long-term reliability data is still emerging. However, the Onix platform has a good track record, and the 1.0T engine benefits from GM’s extensive engineering expertise. In the used car market, this variant is expected to hold its value well due to its fuel efficiency, practicality, and the popularity of the Onix model as a whole. The flex-fuel capability will continue to be a significant advantage in markets like Brazil where ethanol is readily available and often more affordable than gasoline.
