Battery boost for a 2018 Subaru WRX
Battery boost for the 2018 Subaru WRX: CarmaCars does not do this work itself. Request it and we arrange it with a trusted shop or connect you with one, and we can deliver a rental car to you while yours is in.
- Combined
- 10.2 to 12.7 L/100 km
- Body
- Compact Cars

A rental while yours is in the shop
CarmaCars does not do this work; you keep driving while the shop has your car. We deliver a rental to you, by the day, at our usual rates.
The 2018 Subaru WRX for battery boost
- Body: compact cars (EPA size class).
2018 Subaru WRX: every figure
| Figure | Powertrain 1 | Powertrain 2 | Powertrain 3 |
|---|---|---|---|
| Displacement | 2.0 L | 2.0 L | 2.5 L |
| Cylinders | 4 | 4 | 4 |
| MPG city (US) | 21 | 18 | 17 |
| MPG highway (US) | 27 | 24 | 22 |
| MPG combined (US) | 23 | 21 | 19 |
| MPG combined (Imperial) (converted from the US figure) | 28 | 25 | 23 |
| Luggage volume (litres converted from EPA's cubic feet) | 340 L (12 cu ft) | 340 L (12 cu ft) | 340 L (12 cu ft) |
| Fuel cost a year (EPA) (EPA: 15,000 miles at its fuel prices) | US$3,550 | US$3,900 | US$4,450 |
| Fuel cost for 20,000 km (at $1.75 a litre for premium) | $3,570 | $4,026 | $4,446 |
Sources: fuel use, MPG, CO2, electric range, battery, charge time, luggage volume and the annual fuel cost are the US EPA's (fueleconomy.gov). Imperial MPG, litres, inches and pounds are converted from those figures. Figures no free source publishes for this car (power, torque, acceleration, top speed, fuel tank, towing) are left out.
What to check when buying the 2018 Subaru WRX
- NHTSA lists 2 recall campaigns for this model year. Ask the seller for proof each one was fixed; a dealer can check it by the VIN.
- Owners filed 45 complaints with NHTSA, most often about engine (12), electrical system (10) and unknown or other (8). Have those parts checked before you buy.
| Campaign | Date | Component | Summary |
|---|---|---|---|
| 22V522000 | 2022-07-21 | exterior lighting:back up lights:switch | Subaru of America, Inc. (Subaru) is recalling certain 2015-2021 WRX vehicles. The backup light switch may corrode and become inoperative, which can result in the backup lights not illuminating and the rearview camera image not displaying when the vehicle is in reverse. |
| 21V587000 | 2021-07-29 | fuel system, gasoline:delivery:fuel pump | Subaru of America, Inc. (Subaru) is recalling certain 2019-2020 Ascent, 2018 Forester, 2018-2020 Impreza, Legacy, Outback, 2018-2019 BRZ, WRX, and Toyota 86 vehicles. The low-pressure fuel pump inside the fuel tank may fail. |
Source: NHTSA (US) recall campaigns and owner complaints for this model year.
Battery boost: how we help
For battery service on the 2018 Subaru WRX, CarmaCars arranges a trusted shop and rents you a car while yours is in. Lights left on overnight are the classic reason for a flat battery.
Before the shop sees your WRX
A photo of the dashboard warning light helps the shop prepare. Mention the trim and engine in your request; parts differ between them. If you have the service history of your WRX, have it ready for the shop. It is powered by the 2.0L 4-cylinder turbo, with all-wheel drive.
How the request works
You agree the price with the shop before any work starts. Your request goes to a person, who arranges a trusted shop or gives you its name. We can deliver a rental to you while your car is at the shop.
A rental while you wait
Pick a car that suits your week from our fleet. Keep moving with a rental while the shop has your car, by the day at our usual rates. Pick it up from us for free, or have it brought to you.
Car care, briefly
Check that all lights work every few weeks. Have the battery tested before winter if it is more than a few years old. Replace wiper blades when they streak; it matters in rain and snow.
A short checklist
Ask what warranty the shop gives on its parts and labour. Ask the shop to call you before doing anything not on the estimate. Keep the invoice; it is part of the car's service history.
Let us know
Send a request with the car and what it needs, and a person replies within one business day.
Request battery boost
Tell us when suits you. A person replies within one business day and arranges it with a trusted shop or recommends one; the shop sets its own price and time.
Rent a car while yours is in in Toronto
We have no car while yours is in on the site right now. Request one and we look for it for your dates, or take a similar car that is available now.
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Tell us your dates and we look for a car while yours is in for you. Nothing is booked or charged.