2003 Subaru Impreza
Maintenance & specsVERIFIED Jun 15, 2026
The 2003 Subaru Impreza takes 5W-30 Conventional with a total capacity of 4.4 quarts (filter included). You’ll need a 17mm socket for the drain plug, torqued to 44 Nm. The OEM oil filter is the Subaru 15208AA15A, with 2 compatible alternatives listed below. Note: this vehicle has 6 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
⚑ QUICK DIY TIPS FOR THE 2003 SUBARU IMPREZA
- Torque your drain plug to 44 Nm (32 ft-lbs) to avoid leaks or stripped threads.
- Using the OEM filter (Subaru 15208AA15A) is recommended for warranty compliance.
- Always use 5W-30 Conventional as specified by Subaru — using the wrong viscosity can void your powertrain warranty.
- Check the maintenance schedule below for your next service interval.
01
Oil & Filter
02
Fluid Specifications
Transmission FluidBuy
TypeSubaru ATF HP
Capacity4.2 qt
Change interval60,000 mi
Brake FluidBuy
DOT typeDOT 3
Change interval45,000 mi
CoolantBuy
TypeSuper Long Life
ColorBlue
Capacity6.3 qt
Change interval100,000 mi
Power Steering FluidBuy
TypeDexron III
Differential Fluid (rear)Buy
Type75W-90 GL-5
Capacity2.5 qt
Change interval60,000 mi
Differential Fluid (front)Buy
Type75W-85 GL-4
Capacity1.5 qt
Change interval60,000 mi
03
Parts & Specifications
Spark Plugs
TypeIridium
Gap0.044
Quantity4
Change interval100,000 mi
Tires
Size215/55R17
Front pressure33 PSI
Rear pressure33 PSI
04
Maintenance Schedule
≈ every 6 months
- ▸Change Engine Oil & Filter
05
Torque Specifications
06
Safety Recalls
607
Technical Service Bulletins
27Estimated Current Value
Original MSRP
$25,000
Private Party
$1,900–$2,100
Dealer Retail
$2,200–$2,500
Trade-In
$1,700–$1,900
Depreciation
92%
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
Save by doing it yourself
A shop typically charges $70–$140 for this service. Buy the parts and save.
08
Tools & Supplies
Shop parts for the Subaru Impreza
Find oil, filters, and maintenance parts for the 2003 Subaru Impreza on Amazon.
Other 2003 Subaru models
Other Subaru Impreza years
Have info for this vehicle?
Help fellow owners — submit specs from your owner's manual.
ⓘAs an Amazon Associate, OilChangeDIY.com earns from qualifying purchases. Product links on this page may be affiliate links. See our affiliate disclosure for details. Always double-check specs against your owner's manual or official OEM documentation.