2018 Subaru Impreza 5-Door — Full Specifications
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The 2018 Subaru Impreza 5-Door is an estate/wagon powered by a 2L 4-cyl regular gasoline engine. Its most fuel-efficient configuration returns around 37 mpg (UK) / 31 mpg (US EPA) combined, with 31–37 mpg (UK) across all configurations. Owners often keep a Subaru Impreza 5-Door workshop manual to hand for servicing and repairs.
Related listing: see also the 2018 Subaru Impreza page for the base Impreza listing, which may cover additional engines and body styles.
Compared with the 2017 Subaru Impreza 5-Door: Fuel economy is essentially unchanged at around 37 mpg (UK) combined. The engine line-up listed by EPA is unchanged. It carries the same 5★ overall NHTSA rating.
Full Specifications
| Engine | 2L 4-cyl |
|---|---|
| Transmission | Automatic (AV-S7) |
| Fuel Type | Regular Gasoline |
| Powertrain | Conventional |
| Drive | All-Wheel Drive |
| Body Style | Estate/Wagon |
| Passenger Volume (EPA) | 101 cu ft (2,860 L) |
| Luggage Volume (EPA) | 21 cu ft (595 L) |
| Fuel Economy (UK) | 37 combined / 34 urban / 44 extra-urban mpg |
| Fuel Economy (US EPA) | 31 combined / 28 city / 37 highway mpg |
| CO₂ Emissions | 175 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $2,150 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2018 Subaru Impreza 5-Door, all with the 2L 4-cyl engine. Combined fuel economy ranges from 26 to 31 mpg (US), or 31 to 37 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 |
|---|---|---|---|---|---|---|
| 2L 4-cyl | Automatic (AV-S7) | All-Wheel Drive | 37 | 31 (28/37) | 175 | $2,150 |
| 2L 4-cyl | Manual 5-spd | All-Wheel Drive | 31 | 26 (24/31) | 208 | $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 101 cubic feet (about 2,860 litres) and luggage volume at 21 cubic feet (about 595 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2018 Subaru Impreza 5-Door
Running Costs: 2018 Subaru Impreza 5-Door
Covering around 8,000 miles a year in a 2018 Subaru Impreza 5-Door at 37 mpg combined, expect roughly 983 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $2,150 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.
2018 Subaru Impreza 5-Door Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists 5 safety recall campaigns that include the 2018 Subaru Impreza 5-Door (as of 6 October 2026). Most affected areas: Electrical system (2), Exterior lighting (1), Fuel system (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Exterior lighting — campaign 22V624000, reported 12 August 2022. Risk: Reflectors that do not provide adequate illumination reduce the driver's ability to see and increase the risk of a crash.
- Fuel system — campaign 21V587000, reported 29 July 2021. Risk: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
- Electrical system — campaign 21V264000, reported 15 April 2021. Risk: A short circuit in the ignition coils may cause a stall, increasing the risk of a crash.
- Electrical system — campaign 19V743000, reported 18 October 2019. Risk: If a short circuit occurs while driving, the vehicle may stall, increasing the risk of a crash.
Showing the 4 most recent of 5 campaigns.
Owners have filed 151 complaints with NHTSA about the 2018 Subaru Impreza 5-Door. The most-reported areas are Exterior lighting (64), Visibility/wiper (34), Unspecified (25). Complaints include 5 reported crashes, 1 reported fire, 2 reported injuries, 1 reported death. That is well above the median of 85 complaints across the 7 Subaru Impreza 5-Door model years in our data.
Used-buyer checklist for the 2018 Subaru Impreza 5-Door
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Lighting (1 recall campaign · 64 owner complaints) — Check every exterior light works and look for moisture inside the lamp housings.
- Visibility (34 owner complaints) — Check wipers, washers and demisters work properly.
- Electrical system (2 recall campaigns · 12 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Fuel system (1 recall campaign) — Ask whether any fuel-pump or fuel-system recalls were completed, and watch for hard starting or stalling.
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 Subaru Impreza 5-Door compare to similar estate/wagons? For context, estate/wagons in our database average around 34 mpg (UK) combined — this model's 37 mpg figure is 3 mpg better than that average. Its 175 g/km CO₂ figure is 28 g/km lower than the 203 g/km average for estate/wagons on this site. This comparison is based on 194 estate/wagons in our dataset.
Subaru models in our database average about 33 mpg (UK) combined on their most efficient configuration; the 2018 Subaru Impreza 5-Door's 37 mpg is 4 mpg above that make average. Its 175 g/km CO₂ figure is 31 g/km lower than the 206 g/km Subaru average.
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 2018 Subaru Impreza 5-Door
Frequently Asked Questions
What engine does the 2018 Subaru Impreza 5-Door have?
It's fitted with a 2L 4-cyl regular gasoline engine, paired with a automatic (av-s7) transmission.
What is the fuel economy of the 2018 Subaru Impreza 5-Door?
The most efficient configuration returns around 37 mpg (UK) combined, or 31 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 31 to 37 mpg.
How much does the 2018 Subaru Impreza 5-Door cost to fuel per year?
The US EPA estimates about $2,150 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 2018 Subaru Impreza 5-Door have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 5 stars for frontal crash protection.
Does the 2018 Subaru Impreza 5-Door have any recalls?
NHTSA lists 5 safety recall campaigns that include the 2018 Subaru Impreza 5-Door (as of 6 October 2026). Most affected areas: Electrical system (2), Exterior lighting (1), Fuel system (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 2018 Subaru Impreza 5-Door?
Among the 151 owner complaints filed with NHTSA, the most-reported areas are Exterior lighting (64 complaints), Visibility/wiper (34 complaints), Unspecified (25 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
How much interior and luggage space does the 2018 Subaru Impreza 5-Door have?
EPA measures interior passenger volume at 101 cubic feet (about 2,860 litres) and luggage volume at 21 cubic feet (about 595 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.
Is the Subaru Impreza 5-Door's fuel economy good for an estate/wagon?
Yes — it returns around 37 mpg (UK) combined, against a same-body-style average of roughly 34 mpg among the estate/wagons we track, making it one of the more efficient options in its class.