The Chevrolet Onix II Plus 1.0, producing between 78 and 82 horsepower depending on fuel type, represents the entry-level offering within the broader Onix II Plus range, which debuted in 2019. Positioned as a subcompact sedan, the Onix II Plus was primarily designed for the South American market, notably Brazil, where it quickly ascended to become a sales leader. This variant, powered by a 1.0-liter three-cylinder engine, served as the initial access point to the Onix II Plus lineup, attracting buyers prioritizing fuel efficiency and practicality. Production continued through 2025, with the model receiving minor updates throughout its lifespan. The Onix II Plus is constructed on General Motors’ GEM platform, a shared architecture with other small GM vehicles marketed in emerging economies.
Technical Specifications
| Brand | Chevrolet |
| Model | Onix |
| Generation | Onix II Plus |
| Engine Type | 1.0 (78/82 Hp) Ethanol |
| Start of production | 2019 |
| End of production | 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 13.4 kg/Hp, 74.6 Hp/tonne |
| Weight-to-torque ratio | 11 kg/Nm, 90.9 Nm/tonne |
| Power | 78 Hp @ 6400 rpm |
| Power per litre | 78.1 Hp/l |
| Power (Ethanol – E85) | 82 Hp @ 6400 rpm |
| Power per litre (Ethanol – E85) | 82.1 Hp/l |
| Torque | 95 Nm @ 4100 rpm, 70.07 lb.-ft. @ 4100 rpm |
| Torque (Ethanol – E85) | 104 Nm @ 4100 rpm |
| Maximum engine speed | 6500 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 | 12.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| 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 | 1045 kg, 2303.83 lbs |
| Max. weight | 1420 kg, 3130.56 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 | 4474 mm, 176.14 in |
| Width | 1730 mm, 68.11 in |
| Width including mirrors | 2044 mm, 80.47 in |
| Height | 1474 mm, 58.03 in |
| Wheelbase | 2600 mm, 102.36 in |
| Front track | 1506 mm, 59.29 in |
| Rear (Back) track | 1510 mm, 59.45 in |
| Front overhang | 882 mm, 34.72 in |
| Rear overhang | 992 mm, 39.06 in |
| Ride height (ground clearance) | 127 mm, 5 in |
| Minimum turning circle (turning diameter) | 10.6 m, 34.78 ft |
| 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 | 5 gears, manual transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Torsion |
| Front brakes | Disc |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 185/70 R14; 185/65 R15 |
| Wheel rims size | 5.5J x 14; 6J x 15 |
Powertrain & Engine Architecture
The Onix II Plus 1.0’s core is the GM Family I three-cylinder engine, identified by engine codes such as SPE/X10XE. This engine is recognized for its compact dimensions and relatively straightforward construction. It employs a multi-point fuel injection system, delivering fuel directly into the intake ports. The engine features a single overhead camshaft (SOHC) valvetrain, controlling four valves per cylinder. The 1.0-liter engine is flex-fuel capable, accommodating both gasoline and ethanol (E85) – a prevalent feature in Brazil due to the country’s substantial ethanol production. When operating on E85, the engine control unit (ECU) adjusts parameters to yield slightly increased power (82 hp) and torque (104 Nm) due to ethanol’s higher octane rating and energy content. A 5-speed manual transmission is standard, selected for its cost-effectiveness and simplicity. Automatic transmission options were offered on higher trim levels, but were not typically paired with the base 1.0-liter engine.
Driving Characteristics
The Onix II Plus 1.0, equipped with a manual transmission, provides modest performance. Acceleration is sufficient for urban driving, but highway overtaking requires careful consideration. The 78 horsepower and 95 Nm of torque result in an estimated 0-60 mph time of approximately 13-14 seconds. The 5-speed gearbox is well-tuned to the engine’s powerband, with relatively short gear ratios designed to maintain the engine within its optimal operating range. Compared to the 1.2-liter four-cylinder variant, the 1.0-liter feels noticeably less powerful, particularly when carrying a full passenger load or cargo. However, the lighter weight of the 1.0-liter engine contributes to slightly improved handling and fuel economy. The steering is light and responsive, making it well-suited for city environments.
Equipment & Trim Levels
The entry-level Onix II Plus 1.0 typically included standard features such as air conditioning, power steering, power windows, and a basic audio system with Bluetooth connectivity. Safety features comprised dual front airbags and ABS brakes. Higher trim levels, like the LT and Premier, added features such as alloy wheels, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, rear parking sensors, and automatic headlights. Interior upholstery was generally cloth, with a simple and functional dashboard layout. Optional extras included a rearview camera and an upgraded audio system.
Chassis & Braking
The Onix II Plus utilizes a McPherson strut front suspension and a torsion beam rear suspension. This configuration delivers a comfortable ride quality, although it isn’t particularly sporty. The front brakes are ventilated discs, while the rear brakes are drums – a cost-reduction measure common in this vehicle segment. ABS (Anti-lock Braking System) is standard, enhancing braking performance and safety. The chassis is relatively lightweight, contributing to the car’s fuel efficiency. Stabilizer bars are incorporated on both axles, helping to minimize body roll during cornering.
Market Reception & Comparison
The Chevrolet Onix II Plus 1.0 was favorably received in the Brazilian market as an affordable and fuel-efficient option. Reviewers commended its spacious interior, comfortable ride, and modern features. However, the 1.0-liter engine was often criticized for its limited power, especially when contrasted with competitors offering larger engines. Compared to the 1.2-liter version of the Onix II Plus, the 1.0-liter offered superior fuel economy (around 35-38 mpg combined) but considerably less performance. The 1.0-liter variant was primarily aimed at first-time car buyers and those seeking a practical and economical daily commuter vehicle.
Legacy
The Chevrolet Onix II Plus 1.0 has demonstrated a reputation for reasonable reliability. The three-cylinder engine, while simple in design, is generally durable and requires minimal maintenance. Reported issues from owners have included occasional sensor failures and minor oil leaks. In the used car market, the Onix II Plus 1.0 remains a popular choice due to its affordability and fuel efficiency. Its uncomplicated mechanical design makes it relatively easy and inexpensive to repair, further enhancing its appeal to budget-conscious buyers. The Onix II Plus solidified Chevrolet’s standing as a prominent brand within the South American automotive landscape.
