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How many miles per gallon does a Chevy Onix get?

The Onix’s miles-per-gallon figure isn’t fixed; it varies by market, engine, and fuel choice. In gasoline form, most recent Onix models post roughly 28–40 miles per gallon (mpg US) in combined driving, with turbo variants tending toward the higher end and ethanol blends pulling numbers down. Note that the Onix is not commonly sold in the United States, so official EPA ratings are not widely published; instead, ratings come from local testing in Latin American markets such as Inmetro in Brazil and from owner reports.


Variant-by-variant outlook


The following ranges reflect typical combined fuel economy for common Onix configurations in markets where the car is sold. They illustrate how engine choice, fuel type, and transmission influence mpg.



  • 1.0-liter naturally aspirated gasoline: approximately 28–33 mpg (combined, US standard).

  • 1.0-liter turbocharged gasoline: approximately 33–40 mpg (combined).

  • Flex-fuel (ethanol/gasoline blends common in Brazil and other Latin American markets): approximately 23–28 mpg (combined) depending on ethanol content and fuel mix.


These ranges should be interpreted as guidelines. Real-world results vary with driving style, climate, maintenance, and the specific model year and trim.


Important distinctions: test standards vs. real-world use


Because the Onix is primarily sold outside the United States, official EPA fuel economy numbers are not always available in the same format as for U.S.-market cars. Brazil’s Inmetro and other Latin American testing programs, as well as user-reported driving data, provide the practical baseline many buyers rely on. When evaluating a specific Onix, check the official rating for the exact trim and market, and consider real-world reviews for typical results.


Bottom line


In short, you can expect Onix mpg to sit in the mid-30s mpg US range for gasoline versions (roughly 33–40 mpg, depending on turbo usage), with ethanol-blend versions lower. Always confirm with local specifications for your market and model year.


Summary


The Chevy Onix does not have a single universal mpg figure; its efficiency depends on engine, fuel type, and market. Across common gasoline configurations, combined fuel economy generally falls in the high 20s to low 40s mpg US, with turbo variants leaning toward the higher end and ethanol blends reducing mpg. For precise numbers, consult the official figures from your market and the specific trim details, along with real-world user reports.

Is the Chevy Onix a reliable car?


For the 2025 Chevrolet Onix, the reliability score is: 85/100 (based on various consumer reports and expert reviews). This score indicates that the Onix is expected to perform well over time, making it a smart investment for buyers looking for durability and low maintenance costs.



What is the fuel economy of the Chevy Onix?


Powertrain

ModelEngineFuel economy
320"New generation Ecotec" LGB 1.3L I3 VVT (petrol)4.8 L/100 km (20.8 km/L; 58.9 mpg‑imp; 49.0 mpg‑US)
325T, Redline 325T"Eighth generation Ecotec" LIV 1.0L I3 (turbo-petrol)4.9 L/100 km (20.4 km/L; 57.6 mpg‑imp; 48.0 mpg‑US)



Is a Chevy Equinox good on gas?


Yes, the Chevy Equinox is generally considered good on gas, especially in its current configuration with the standard 1.5L turbocharged engine. Fuel economy ratings are competitive for its class, reaching up to 26 mpg city/31 mpg highway for front-wheel-drive (FWD) models and 24 mpg city/30 mpg highway for all-wheel-drive (AWD) models.
 

  • Fuel Economy: Expect up to 26 mpg city and 31 mpg highway with FWD, or 24 mpg city and 30 mpg highway with AWD, according to Northside Chevrolet, Green Family Chevrolet, and Hendrick Chevrolet Cary. 
  • Engine: The 1.5L turbocharged four-cylinder engine is designed for both efficiency and adequate power. 
  • Technology: Features like Variable Valve Timing (VVT), Direct Injection, and Automatic Stop/Start help maximize fuel savings. 
  • Comparison: The Equinox holds its own against many competitors in the compact SUV segment. 



What Chevy has the best gas mileage?


The most fuel-efficient Chevy models include the 2022 Spark (30 mpg city/38 mpg highway) and the 2025 Malibu (28 mpg city/36 mpg highway) for gasoline-powered cars, and the 2025 Trax (30 mpg combined) and 2025 Trailblazer (30 mpg combined) for SUVs. For electric options, the Equinox EV is the most fuel-efficient, with up to 319 miles of range on a full charge.
 
Most fuel-efficient Chevy models

Vehicle Engine/Powertrain EPA-estimated MPG
2022 Chevrolet Spark 1.4L 4-cylinder 30 city / 38 highway
2025 Chevrolet Malibu 1.5L Turbo 28 city / 36 highway
2025 Chevrolet Trax 1.2L Turbo 30 combined
2025 Chevrolet Trailblazer 1.2L Turbo 30 combined
2025 Chevrolet Equinox EV Electric Up to 319 miles on a full charge
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Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.