The Chevrolet Onix I 1.4, produced from 2013 to 2016, represented a significant entry for General Motors into the burgeoning subcompact hatchback market in Brazil and other South American countries. Positioned as an affordable and practical option, the 1.4-liter engine variant, available with either gasoline or flex-fuel (ethanol) capability, served as the mainstay of the Onix lineup. This model was crucial in establishing the Onix as a sales leader in its segment, competing directly with vehicles like the Fiat Palio and Volkswagen Gol. The Onix I was built on GM’s global Gamma platform, also underpinning models like the Opel Corsa and Chevrolet Prisma. The 1.4L engine option was generally considered the entry-level trim, offering a balance between cost and usability, while higher trims featured a more powerful 1.8L engine.
Technical Specifications
| Brand | Chevrolet |
| Model | Onix |
| Generation | Onix I |
| Type (Engine) | 1.4 (98/106 Hp) Ethanol |
| Start of production | 2013 |
| End of production | 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel Type | Petrol / Ethanol – E85 |
| Acceleration 0 – 100 km/h | 12.7 sec |
| Acceleration 0 – 62 mph | 12.7 sec |
| Acceleration 0 – 100 km/h (Ethanol – E85) | 12 sec |
| Acceleration 0 – 60 mph (Calculated) | 12.1 sec |
| Maximum speed | 171 km/h (106.25 mph) |
| Weight-to-power ratio | 10.7 kg/Hp, 93.6 Hp/tonne |
| Weight-to-torque ratio | 8.2 kg/Nm, 121.3 Nm/tonne |
| Power | 98 Hp @ 6000 rpm |
| Power per litre | 70.6 Hp/l |
| Power (Ethanol – E85) | 106 Hp @ 6000 rpm |
| Power per litre (Ethanol – E85) | 76.3 Hp/l |
| Torque | 127 Nm @ 4800 rpm (93.67 lb.-ft. @ 4800 rpm) |
| Torque (Ethanol – E85) | 136 Nm @ 4800 rpm |
| Maximum engine speed | 6300 rpm |
| Engine layout | Front, Transverse |
| Engine Model/Code | SPE/4 |
| Engine displacement | 1389 cm3 (84.76 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 77.6 mm (3.06 in.) |
| Piston Stroke | 73.4 mm (2.89 in.) |
| Compression ratio | 12.4:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated |
| Valvetrain | SOHC |
| Engine oil capacity | 3.5 l (3.7 US qt | 3.08 UK qt) |
| Coolant | 5.4 l (5.71 US qt | 4.75 UK qt) |
| Kerb Weight | 1047 kg (2308.24 lbs.) |
| Max. weight | 1440 kg (3174.66 lbs.) |
| Max load | 393 kg (866.42 lbs.) |
| Trunk (boot) space – minimum | 280 l (9.89 cu. ft.) |
| Fuel tank capacity | 54 l (14.27 US gal | 11.88 UK gal) |
| Length | 3930 mm (154.72 in.) |
| Width | 1705 mm (67.13 in.) |
| Width including mirrors | 1964 mm (77.32 in.) |
| Height | 1484 mm (58.43 in.) |
| Wheelbase | 2528 mm (99.53 in.) |
| Front track | 1487 mm (58.54 in.) |
| Rear (Back) track | 1493 mm (58.78 in.) |
| Front overhang | 822 mm (32.36 in.) |
| Rear overhang | 580 mm (22.83 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Minimum turning circle | 10.43 m (34.22 ft.) |
| Drivetrain Architecture | ICE, Front Wheel Drive |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front suspension | Independent, McPherson with coil spring and anti-roll bar |
| Rear suspension | Torsion |
| Front brakes | Disc, 240×20 mm |
| Rear brakes | Drum, 200×31.5 mm |
| Assisting systems | ABS |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic |
| Tires size | 185/65 R15 |
| Wheel rims size | 5.5J x 15 |
Powertrain & Engine Architecture
The Chevrolet Onix 1.4 utilized the SPE/4 engine, a 1.4-liter inline-four cylinder engine. This engine featured a single overhead camshaft (SOHC) valvetrain with two valves per cylinder. The engine was designed to run on both gasoline and ethanol, with the engine control unit (ECU) automatically adjusting parameters based on fuel type. The multi-port fuel injection system delivered fuel directly into the intake ports, optimizing combustion. When running on ethanol, the engine produced 106 horsepower due to ethanol’s higher octane rating and cooling effect during combustion. The 5-speed manual transmission was the standard offering, providing a relatively simple and durable drivetrain. The transmission’s gear ratios were tuned for fuel efficiency and everyday driving, rather than outright performance.
Driving Characteristics
The Onix 1.4 with the manual transmission offered adequate, though not exhilarating, performance. Acceleration from 0-60 mph took around 12.1 seconds, making it suitable for urban commuting and highway merging with careful planning. The engine’s torque peak at 4800 rpm meant that drivers needed to rev the engine to access its power. Compared to the 1.8L variant, the 1.4L felt noticeably less powerful, especially when fully loaded with passengers or cargo. The suspension provided a comfortable ride, absorbing bumps and imperfections in the road well. However, handling was not particularly sporty, with noticeable body roll during cornering. The hydraulic power steering offered a reasonable level of assistance, making it easy to maneuver in tight spaces.
Equipment & Trim Levels
The base-level Onix 1.4 typically included features such as air conditioning, power steering, power windows, and a basic audio system with USB connectivity. Safety features included dual front airbags and ABS brakes. Higher trim levels, such as the LT and LTZ, added features like alloy wheels, fog lights, a more advanced audio system with Bluetooth connectivity, and remote keyless entry. Interior upholstery was typically cloth, with a simple and functional dashboard layout. Optional extras included a sunroof, parking sensors, and a navigation system.
Chassis & Braking
The Onix I utilized a McPherson strut front suspension and a torsion beam rear suspension. This setup provided a good balance between ride comfort and handling. The front brakes were ventilated discs, while the rear brakes were drums. The ABS system helped to prevent wheel lockup during hard braking, improving stability and control. The relatively lightweight construction of the Onix (around 2308 lbs) helped to offset the modest power output of the 1.4L engine.
Market Reception & Comparison
The Chevrolet Onix 1.4 was generally well-received by critics and consumers alike. It was praised for its affordability, fuel efficiency, and practicality. However, some reviewers noted that the engine lacked power, especially when running on gasoline. Compared to the 1.8L variant, the 1.4L offered better fuel economy but significantly less performance. The 1.8L was favored by drivers who prioritized acceleration and highway cruising ability. The Onix 1.4’s fuel economy was competitive with other subcompact hatchbacks in its class, achieving around 30-35 mpg on the combined cycle when running on gasoline and slightly less on ethanol.
Legacy
The Chevrolet Onix I 1.4 proved to be a reliable and durable vehicle, with the SPE/4 engine generally exhibiting good longevity. The powertrain, while not particularly sophisticated, was relatively simple to maintain and repair. In the used car market, the Onix 1.4 remains a popular choice for budget-conscious buyers seeking a practical and affordable hatchback. While not a performance icon, the Onix 1.4 played a vital role in establishing Chevrolet as a major player in the South American automotive market, paving the way for the continued success of the Onix nameplate.
