2023 Mazda CX-30 — Full Specifications
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The 2023 Mazda CX-30 is an SUV 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 30–35 mpg (UK) across all configurations. Owners often keep a Mazda CX-30 workshop manual to hand for servicing and repairs.
Compared with the 2022 Mazda CX-30: Fuel economy improves from 31 to 35 mpg (UK) combined on the most efficient configuration. The engine line-up listed by EPA is unchanged. It carries the same 5★ overall NHTSA rating.
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 | 4-Wheel Drive |
| Body Style | SUV |
| Length | 4395 mm |
| Width | 1795 mm |
| Height | 1540 mm |
| Fuel Economy (UK) | 35 combined / 31 urban / 40 extra-urban mpg |
| Fuel Economy (US EPA) | 29 combined / 26 city / 33 highway mpg |
| CO₂ Emissions | 192 g/km |
| EPA Greenhouse Gas Score | 6 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $2,300 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2023 Mazda CX-30 across 2 engines (2.5L 4-cyl, 2.5L 4-cyl turbo). Combined fuel economy ranges from 25 to 29 mpg (US), or 30 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 | 35 | 29 (26/33) | 192 | $2,300 |
| 2.5L 4-cyl turbo | Automatic (S6) | 4-Wheel Drive | 30 | 25 (22/30) | 219 | $2,700 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2023 Mazda CX-30
Running Costs: 2023 Mazda CX-30
Covering around 8,000 miles a year in a 2023 Mazda CX-30 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.
Planning a road trip? Grab a road trip packing list. Only need this car occasionally? See our buy vs rent comparison.
2023 Mazda CX-30 Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists 1 safety recall campaign that include the 2023 Mazda CX-30 (as of 6 October 2026). Most affected areas: Service brakes (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Service brakes — campaign 23V275000, reported 18 April 2023. Risk: Reduced braking ability can increase the distance required to stop the vehicle, increasing the risk of a crash.
Owners have filed 25 complaints with NHTSA about the 2023 Mazda CX-30. The most-reported areas are Service brakes (7), Unspecified (6), Forward collision avoidance (5). Complaints include 5 reported crashes, 2 reported injuries. That is close to the median of 31 complaints across the 7 Mazda CX-30 model years in our data.
Used-buyer checklist for the 2023 Mazda CX-30
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Brakes (1 recall campaign · 7 owner complaints) — Brake firmly from speed and look for pulling, vibration or a soft pedal; ask for brake service history.
- Driver-assist sensors (5 owner complaints) — Check that driver-assist warning lights are off and sensors are clean and undamaged.
- Electrical system (3 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
How does the Mazda CX-30 compare to similar SUVs? For context, SUVs in our database average around 27 mpg (UK) combined — this model's 35 mpg figure is 8 mpg better than that average. Its 192 g/km CO₂ figure is 61 g/km lower than the 253 g/km average for SUVs on this site. This comparison is based on 1824 SUVs in our dataset.
At 35 mpg (UK) combined it sits close to the 34 mpg average for Mazda models in our database.
Of the 7 Mazda CX-30 model years we cover, the 2023 is the most economical on its best configuration (35 mpg UK combined). See every Mazda CX-30 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 2023 Mazda CX-30
Frequently Asked Questions
What engine does the 2023 Mazda CX-30 have?
EPA lists 2 engines for the 2023 Mazda CX-30: 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 2023 Mazda CX-30?
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 30 to 35 mpg.
How much does the 2023 Mazda CX-30 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.
Does the 2023 Mazda CX-30 have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 5 stars for frontal crash protection.
Does the 2023 Mazda CX-30 have any recalls?
NHTSA lists 1 safety recall campaign that include the 2023 Mazda CX-30 (as of 6 October 2026). Most affected areas: Service brakes (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
What are the most common problems reported for the 2023 Mazda CX-30?
Among the 25 owner complaints filed with NHTSA, the most-reported areas are Service brakes (7 complaints), Unspecified (6 complaints), Forward collision avoidance (5 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
Is the Mazda CX-30's fuel economy good for an SUV?
Yes — it returns around 35 mpg (UK) combined, against a same-body-style average of roughly 27 mpg among the SUVs we track, making it one of the more efficient options in its class.