Mazda CX-3

Fuel economy, running costs and specs by model year

The Mazda CX-3 appears in this database in 5 model years, from 2016 to 2020, offered with gasoline power. Combined economy ranges from 29 to 31 MPG across those years, with annual fuel costs of $2,100 to $2,250 at 15,000 miles.

Fuel economy by year

How it compares

Against the average compact cars in this dataset (about 29 MPG), the CX-3 sits roughly 1 MPG above that mark on average, making it a relatively efficient choice for its class.

Five-year fuel cost

Fuelling a CX-3 for five years at the EPA's 15,000-mile basis costs roughly $10,500 to $11,250, averaging about $10,875 across the versions here. That is the energy bill alone — it excludes insurance, maintenance and depreciation, which for most owners together exceed what goes into the tank.

How it changed over time

Between 2016 and 2020 the CX-3's average combined economy improved from about 30 to 30 MPG. Redesigns, new engines and added hybrid or electric versions are usually what move the number, so the year you choose can matter as much as the model.

Best year for fuel economy

The 2020 CX-3 has the strongest average combined economy in this database at about 30 MPG, while the 2016 is the lowest at about 30 MPG. If running cost is your priority, that is the year to target on the used market; later years may add equipment or safety features instead.

2020 CX-3 at a glance

Use the comparison tool to set the CX-3 against a rival, or go back to all Mazda models.