2026 Mazda 3 5-Door — Full Specifications
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The 2026 Mazda 3 5-Door is a hatchback offered with 2 engines (2.5L 4-cyl, 2.5L 4-cyl turbo). Its most fuel-efficient configuration returns around 35 mpg (UK) / 29 mpg (US EPA) combined, with 31–35 mpg (UK) across all configurations. Owners often keep a Mazda 3 5-Door workshop manual to hand for servicing and repairs.
Related listing: see also the 2026 Mazda 3 page for the base 3 listing, which may cover additional engines and body styles.
Compared with the 2025 Mazda 3 5-Door: Fuel economy is essentially unchanged at around 35 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine (most efficient) | 2.5L 4-cyl |
|---|---|
| Engine options | 2.5L 4-cyl · 2.5L 4-cyl turbo |
| Transmission (most efficient) | Automatic (S6) |
| Fuel Type | Regular Gasoline |
| Powertrain | Conventional |
| Drive | Front-Wheel Drive |
| Body Style | Hatchback |
| Passenger Volume (EPA) | 93 cu ft (2,633 L) |
| Luggage Volume (EPA) | 20 cu ft (566 L) |
| Fuel Economy (UK) | 35 combined / 31 urban / 41 extra-urban mpg |
| Fuel Economy (US EPA) | 29 combined / 26 city / 34 highway mpg |
| CO₂ Emissions | 188 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $2,300 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 4 configurations for the 2026 Mazda 3 5-Door across 2 engines (2.5L 4-cyl, 2.5L 4-cyl turbo). Combined fuel economy ranges from 26 to 29 mpg (US), or 31 to 35 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 2.5L 4-cyl | Automatic (S6) | 4-Wheel Drive | 34 | 28 (25/34) | 197 | $2,400 |
| 2.5L 4-cyl | Automatic (S6) | Front-Wheel Drive | 35 | 29 (26/34) | 188 | $2,300 |
| 2.5L 4-cyl | Manual 6-spd | Front-Wheel Drive | 34 | 28 (25/34) | 195 | $2,400 |
| 2.5L 4-cyl turbo | Automatic (S6) | 4-Wheel Drive | 31 | 26 (23/31) | 209 | $2,600 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
EPA measures interior passenger volume at 93 cubic feet (about 2,633 litres) and luggage volume at 20 cubic feet (about 566 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2026 Mazda 3 5-Door
Running Costs: 2026 Mazda 3 5-Door
Covering around 8,000 miles a year in a 2026 Mazda 3 5-Door at 35 mpg combined, expect roughly 1,039 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $2,300 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2026 Mazda 3 5-Door Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
How It Compares
At 35 mpg (UK) combined it sits close to the 34 mpg average for Mazda models in our database. Its 188 g/km CO₂ figure is 10 g/km lower than the 198 g/km Mazda average.
Of the 13 Mazda 3 5-Door model years we cover, the 2026 ranks 11th for combined fuel economy on its best configuration (35 mpg UK combined, against a high of 40 mpg). See every Mazda 3 5-Door year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2026 Mazda 3 5-Door
Frequently Asked Questions
What engine does the 2026 Mazda 3 5-Door have?
EPA lists 2 engines for the 2026 Mazda 3 5-Door: 2.5L 4-cyl, 2.5L 4-cyl turbo. The most fuel-efficient configuration pairs the 2.5L 4-cyl with a automatic (s6).
What is the fuel economy of the 2026 Mazda 3 5-Door?
The most efficient configuration returns around 35 mpg (UK) combined, or 29 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 31 to 35 mpg.
How much does the 2026 Mazda 3 5-Door cost to fuel per year?
The US EPA estimates about $2,300 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
How much interior and luggage space does the 2026 Mazda 3 5-Door have?
EPA measures interior passenger volume at 93 cubic feet (about 2,633 litres) and luggage volume at 20 cubic feet (about 566 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.