--- title: "2015-2019 Subaru Outback Specs: Weight, Fuel Tank, MPG" description: "Fuel tank 18.5 gallons. Curb weight, fuel economy, ground clearance and other key numbers for the 2015-2019 Subaru Outback, by engine and drivetrain." url: "https://whichcarparts.com/cars/subaru/outback/2015-2019/specs" updated: "2026-08-21" --- # 2015-2019 Subaru Outback Specifications Fuel tank 18.5 gallons. Curb weight, fuel economy, ground clearance and other key numbers for the 2015-2019 Subaru Outback, by engine and drivetrain. **Quick answer**: The 2015-2019 Subaru Outback holds 18.5 gallons of fuel and is rated 26 city / 33 hwy (2.5i CVT); 20/27 (3.6R). ## 2015-2019 Subaru Outback key specs | Spec | Value | | --- | --- | | Fuel tank | 18.5 gallons | | Fuel economy | 26 city / 33 hwy (2.5i CVT); 20/27 (3.6R) | | Curb weight | 3,630 lbs | | Key fob battery | CR1620 (2015-2016 flip-key remotes); CR2032 on later push-button-start Limited/Touring smart keys. Check which key your trim uses | ## 2015-2019 Subaru Outback engines | Engine | Trims | Power | Fuel | | --- | --- | --- | --- | | 2.5L 4-cylinder (FB25, revised, port-injected) | 2.5i, Premium, Limited, Touring | 175 hp | Regular 87 octane | | 3.6L H6 (EZ36, now paired to High Torque CVT) | 3.6R Limited, 3.6R Touring | 256 hp | Regular 87 octane (premium not required) | ## Which Subaru Outback model years does this cover? These specs specifications apply to every Subaru Outback built from 2015 through 2019, the BS (5th generation), mid-size wagon/crossover. Nothing in this specification changes between those model years. - [2015 Outback](https://whichcarparts.com/cars/subaru/outback/2015) - [2016 Outback](https://whichcarparts.com/cars/subaru/outback/2016) - [2017 Outback](https://whichcarparts.com/cars/subaru/outback/2017) - [2018 Outback](https://whichcarparts.com/cars/subaru/outback/2018) - [2019 Outback](https://whichcarparts.com/cars/subaru/outback/2019) ## What changed during the 2015-2019 Subaru Outback | Years | What changed | | --- | --- | | 2015 | Full redesign: all-new FB25, 3.6R moves to CVT, EyeSight driver-assist available for the first time on Outback | | 2018 | Facelift: revised front/rear styling, updated Starlink infotainment, standard EyeSight on most trims | | 2019 | Final year of this generation; last model year covered by the FB-engine oil-consumption settlement window | ## 2015-2019 Subaru Outback specs: common questions ### How big is the fuel tank on a 2015-2019 Subaru Outback? 18.5 gallons. ### What does a 2015-2019 Subaru Outback weigh? About 3,630 lbs at the curb, before passengers and cargo. ### What gas mileage does a 2015-2019 Subaru Outback get? 26 city / 33 hwy (2.5i CVT); 20/27 (3.6R) on the EPA cycle. ## Sources - [sportsubarusouth.com, Subaru Outback oil type by model year](https://www.sportsubarusouth.com/subaru-research/subaru-outback-oil-type/) - [AMSOIL lookup, 2019 Outback 2.5L FB25 oil spec/capacity](https://www.amsoil.com/lookup/auto-and-light-truck/2019/subaru/outback/2-5l-4-cyl-engine-code-fb25-4/1000/) - [awdadventure.com, Subaru Outback tire fitment by year (2015-2019)](https://awdadventure.com/pages/lifted-subaru-tire-size-charts) - [Rohnert Park Transmission, Subaru Outback CVT problems guide by model year](https://rohnertparktransmission.com/blog/subaru-outback-cvt-problems-guide) - [Subaru Battery Settlement, official settlement site (2015-2020 Outback coverage)](https://www.subarubatterysettlement.com/) - [Consumer Reports, 2015 Subaru Outback reliability (CVT complaint)](https://www.consumerreports.org/cars/subaru/outback/2015/reliability/) - [classaction.org, Subaru windshield settlement given preliminary approval (Khona/Powell case background)](https://www.classaction.org/news/subaru-windshield-settlement-given-preliminary-approval-reimbursements-extended-warranty-available) - [Reddit r/subaru, 2019-2020 CVT warranty extension to 10 yr/100k thread](https://www.reddit.com/r/subaru/comments/1ltsv9m/20192020_us_cvt_warranty_extension_to_10/) ## Other Subaru Outback generations - [2020-2025 Subaru Outback specs](https://whichcarparts.com/cars/subaru/outback/2020-2025/specs) - [2010-2014 Subaru Outback specs](https://whichcarparts.com/cars/subaru/outback/2010-2014/specs) Or [compare all generations](https://whichcarparts.com/cars/subaru/outback/specs). ## More for the 2015-2019 Subaru Outback - [Oil & filter](https://whichcarparts.com/cars/subaru/outback/2015-2019/oil) - [Battery](https://whichcarparts.com/cars/subaru/outback/2015-2019/battery) - [Tires & wheels](https://whichcarparts.com/cars/subaru/outback/2015-2019/tires) - [Wiper blades](https://whichcarparts.com/cars/subaru/outback/2015-2019/wipers) - [Air & cabin filters](https://whichcarparts.com/cars/subaru/outback/2015-2019/filters) - [Bulbs](https://whichcarparts.com/cars/subaru/outback/2015-2019/bulbs) - [Brakes](https://whichcarparts.com/cars/subaru/outback/2015-2019/brakes) - [Fluids](https://whichcarparts.com/cars/subaru/outback/2015-2019/fluids) - [Service schedule](https://whichcarparts.com/cars/subaru/outback/2015-2019/service-schedule) - [Problems & reliability](https://whichcarparts.com/cars/subaru/outback/2015-2019/common-problems) - [Oil light reset](https://whichcarparts.com/cars/subaru/outback/2015-2019/oil-reset) - [Key fob battery](https://whichcarparts.com/cars/subaru/outback/2015-2019/key-fob-battery) Specifications vary with engine option, production date, and market.