2020 Subaru WRX STI repair manual

2020 Subaru WRX STI factory repair manual (VA) – PDF for your VIN

The 2020 Subaru WRX STI (VA) factory repair manual, made for your VIN from the same Subaru service information dealer technicians use: removal and installation steps, torque values, diagnostics and wiring diagrams for your exact WRX STI. The 2020 WRX STI came with the 2,5 liter turbo, 6MT, AWD. engine.

factory-manuals.com is a Google Top Quality Store. Among stores with that badge, it is the only one where you buy the manual itself instead of renting access to it.

The difference you get

• Manufacturer data: written by Subaru, not rewritten by a third-party publisher
• One payment: no subscription, no login that expires, no monthly fee
• Clickable hyperlinks throughout the PDF: from a repair step straight to the diagram or torque table it mentions, with bookmarks and full-text search on top. Few manuals sold online have this
• Wiring included: diagrams, connector pinouts and component locations
• A real person checks every order and the VIN before the manual is built
• Online since 2015, rated a Google Top Quality Store

Owner's manual or repair manual?

The owner's manual in the glovebox explains the controls and the service intervals. This is the other book, the one technicians work from:

• Owner's manual: controls, warning lights, maintenance schedule, fluid types
• Factory repair manual: removal and installation steps, torque specs, diagnostic trouble codes, wiring diagrams and component locations

The 2020 WRX STI belongs to the WRX STI (VA) generation, model years 2015–2021. Most procedures are shared with the other years of this generation, but options, software and wiring changed along the way, which is why the manual is built for your VIN.

Engines available for the 2020 WRX STI

• 2,5 liter turbo, 6MT, AWD.

Your manual is built for your version only: the VIN tells us the exact engine and transmission.

Common work on a 2020 WRX STI

• Spark plugs and ignition coils
• Coolant and transmission fluid service
• Battery, starter and charging faults
• Sensor faults: oxygen, ABS wheel speed, mass air flow
• Door lock actuators and window regulators
• Boost leaks and intercooler hoses
• Turbocharger oil feed and return lines

What NHTSA records show for the 2020 WRX STI

The U.S. safety agency NHTSA lists 1 safety recall and 18 owner complaints for the 2020 WRX STI. The repair steps for these systems are in the manual.

• Exterior Lighting: Switch (campaign 22V522000)

Most owner complaints concern: Electrical System (6), Power Train (3), Engine (3), Visibility/Wiper (3), Unknown or Other (2).

On a 2020 vehicle the 10th character of the 17-digit VIN is “L”, a quick way to confirm the model year before you order.

Other years of the same generation: 2015 WRX STI, 2016 WRX STI, 2017 WRX STI, 2018 WRX STI, 2019 WRX STI, 2021 WRX STI.

Other Subaru manuals: 2026 Forester Wilderness, 2020 Ascent, 2020 Crosstrek Hybrid, 2024 Crosstrek Wilderness, 2026 Forester, 2020 Legacy, 2025 Solterra, 2026 Crosstrek, 2025 Crosstrek, 2020 Crosstrek.

How it works: you order with your VIN, we put together the Subaru service information for that vehicle, and the PDF reaches your inbox in 12–24 hours. It works offline and prints page by page.

What you'll find in the 2020 WRX STI manual

• Vehicle-specific information
• General Description
• Engine
• Suspension
• Driveline/Axle
• Brakes
• Transmission/Transaxle
• Steering
• Heater & Airconditioner, Ventilator
• Airbag System & Seat Belt System
• Body & Electrical
• Fuse and Relay
• Power Supply Circuit
• Ground Circuit
• Active Sound Control System
• Airbag System
• Air Conditioning System
• AT Control System
• Audio and Navigation System
• Back-up Light System
• Blind Spot Detection/Rear Cross Traffic Alert
• CAN Communication System
• Charging System
• Clearance Light and Illumination Light System
• Combination Meter System
• Cruise Control System
• Daytime Running Light System
• Door Lock Control System
• Electric Power Steering System
• Engine Electrical System
• EyeSight System
• Front Accessory Power Supply Socket System
• Front Wiper and Washer System
• Headlight Beam Leveler System
• Headlight System
• Horn System
• Immobilizer System
• Interior Light System
• Keyless Access with Push Button Start System
• Mirror Heater System

Covered:

2,5 liter turbo, 6MT, AWD.

Your manual is built for the version in your VIN.

This video is for information. Your manual looks and works the same way, but it is not identical.

Free, by email in 12-24 hours.