Free used car buyer guide / GK/GT / Subaru Global Platform / 2017-2023
Subaru Impreza common problems and best years
By BYBA Research - how we score cars
Updated 2026-06-12
BYBA Buy Score
6.7/10
1 walk-away risk, 4 serious faults, 3 minor faults documented for this generation, weighted by severity and repair cost. Biggest factor: ignition coil / pcv / brake hose recall status. Score methodology.
The 2017-2023 Impreza is a practical AWD small car, but its weak points are not the old Subaru head-gasket stories. Focus instead on FB20 oil consumption/noise, CVT chain/valve-body behaviour, recall completion, wheel bearings, infotainment faults and crash/neglect history. The safest buy is a 2019-2023 car with smooth CVT, clean recalls and stable oil level.
Faults covered
8
Highest risk
Ignition coil / PCV /
Best years
2019-2023
Best buys
- 2019-2023 CVT with recall printout, smooth low-speed drive and no oil-use history.
- Manual hatch if clutch is quiet and not abused.
- Low-mileage car with complete Subaru service records.
Inspect hard
- 2017 launch cars for software, recalls and infotainment issues.
- Any CVT for hesitation, flare, shudder and TCM codes.
- Rust/snow-belt cars for wheel bearings and brake corrosion.
Avoid
- Oil light, engine knock or low dipstick.
- CVT warning lights or seller says "needs reset".
- Unrepaired ignition coil, PCV or brake hose recall status.
Next checks
Before you contact the seller
Check the car's history first. Then bring the right tools if it still looks worth viewing.
Primary next step
Check history, title, and recall status
The faults above matter more if the car also has accident history, finance flags, missing service records, or open safety recalls.
Viewing kit
Bring the right tools
Four cheap tools catch most of the faults on this page at a Subaru Impreza viewing.
Printable workflow
Take the inspection pack
The PDF is the ordered checklist for the viewing: documents, walk-around, test drive, and scan.
Open PDF optionSome links here are partner links. If you buy through one, BYBA earns a commission. The price you pay does not change. How we make money.
Engines and trims
Which Subaru Impreza should you buy?
On most used cars, the engine and trim choice changes the risk more than the mileage does. Narrow this down before you start viewing cars.
FB20 2.0 flat-four
2017-2023
OK IF OIL LEVEL IS STABLE
Not a performance engine; buy quiet operation, oil discipline and no misfire/catalyst history.
Lineartronic CVT
2017-2023
ACCEPTABLE ONLY WHEN SMOOTH
Drivability and scan data matter because CVT repair can exceed the value of an older Impreza.
Subaru Impreza market/trim variant 3
2017-2023
VERIFY EXACT SPEC
Catalogue coverage is market-sensitive, so confirm the engine, gearbox, drivetrain and recall population by VIN before applying the fault rows.
Year notes
Year-by-year buyer advice
Use this to narrow the search before you spend time travelling to view a car.
2017
New Global Platform Impreza launched.
Buyer: Check recalls, infotainment and early build quality.
Owner: Keep recall paperwork because launch cars draw questions.
2018
Range continues; CVT and radio complaints remain inspection points.
Buyer: Prefer cars with dealer updates.
Owner: Fix software and battery issues before warranty ends.
2019
Mature early production.
Buyer: Good value if CVT, oil level and recalls are clean.
Owner: Annual oil changes help resale.
2020
Minor refresh/safety equipment changes by market.
Buyer: Check EyeSight functions and windshield history.
Owner: Keep calibration paperwork after glass replacement.
2021
Late-cycle cars with more standard driver aids.
Buyer: Scan ADAS and infotainment modules.
Owner: Do not ignore warning lamps from low battery.
2022
Final full years before next Impreza change.
Buyer: Best target range when priced correctly.
Owner: Keep tyre matching strict for AWD.
2023
Final GK/GT year in many markets.
Buyer: Verify build generation and warranty status.
Owner: Late cars need complete service records to justify price.
Common problems
Faults to check before buying
What fails, what it looks like, what it costs, and the quick checks you can do at the viewing - ranked by how badly each one can hurt you.
Fault 1
CVT hesitation, valve-body or chain/pulley wear
Affects
2017-2023 CVT Impreza.
Symptoms
Flare, shudder, delayed engagement, AT oil temp light, whining.
Typical repair cost
USD 900-2,000 valve body; USD 4,000-8,000 CVT.
Codes / scan clues
P0700, P2763, pressure control and lock-up solenoid codes.
Root cause: Fluid heat/wear, solenoid faults or internal CVT wear.
Quick check
- Cold and hot Drive/Reverse engagement.
- Light-throttle 15-45 mph test.
- Scan TCM for stored history.
- Ask for CVT fluid/service or warranty repair proof.
Fault 2
FB20 oil consumption or low-oil damage
Affects
2017-2023 2.0 flat-four.
Symptoms
Low dipstick, oil light, top-up habit, engine tick/knock.
Typical repair cost
USD 100-300 diagnosis; USD 3,500-7,000 engine/short block if damaged.
Codes / scan clues
Misfire, catalyst codes, oil control faults.
Root cause: Ring sealing/PCV issues, long intervals or owner neglect.
Quick check
- Check oil level before test drive.
- Ask exact top-up volume between services.
- Inspect service intervals.
- Avoid noisy engines with low oil.
Fault 3
Ignition coil / PCV / brake hose recall status
Affects
Specific 2017-2019+ Impreza VIN populations.
Symptoms
Misfire, stall, oil leak/smoke, brake hose swelling or open recall.
Typical repair cost
USD 0 recall; USD 300-1,200 outside campaign symptoms.
Codes / scan clues
P0300-P0304, PCV/oil-related symptoms; brake warnings vary.
Root cause: Production-specific recall parts.
Quick check
- Run VIN at Subaru and NHTSA.
- Confirm recall completion date.
- Scan misfire and SRS/ABS modules.
- Reject "recalls don't matter" seller logic.
Fault 4
Wheel bearing hum and brake corrosion
Affects
2017-2023, especially snow-belt cars.
Symptoms
Speed hum, brake scraping, uneven tyre wear, ABS sensor faults.
Typical repair cost
USD 350-800 per bearing; USD 400-1,200 brakes/sensors.
Codes / scan clues
ABS wheel-speed faults possible.
Root cause: Bearing wear and road-salt corrosion.
Quick check
- Listen at 40-70 mph.
- Check brake backing plates and rotors.
- Scan ABS if warning lights appear.
- Inspect tyres for uneven wear.
Fault 5
Infotainment, battery drain and module glitches
Affects
2017-2023, especially early head units.
Symptoms
Frozen screen, Bluetooth failure, dead battery, warning-light cluster.
Typical repair cost
USD 100-300 software/battery; USD 800-1,800 head unit/module.
Codes / scan clues
Low-voltage and communication codes.
Root cause: Head-unit software, weak battery or parasitic draw.
Quick check
- Pair phone and test audio/navigation.
- Check battery age and charging voltage.
- Scan for low-voltage history.
- Confirm no repeated jump-start story.
Fault 6
EyeSight windshield/calibration and camera faults
Affects
EyeSight-equipped 2020-2023 and earlier equipped cars.
Symptoms
EyeSight disabled, lane/brake warnings, replaced windshield without calibration.
Typical repair cost
USD 250-600 calibration; USD 900-1,800 windshield/calibration.
Codes / scan clues
ADAS camera/calibration codes.
Root cause: Camera obstruction, glass replacement, weak battery or calibration loss.
Quick check
- Confirm EyeSight proves out on road.
- Inspect windshield brand and chip repairs.
- Ask for calibration invoice after glass work.
- Scan ADAS module.
Fault 7
Manual clutch wear and throw-out bearing noise
Affects
Manual Impreza, especially urban/learner use.
Symptoms
Clutch slip, bearing chirp, vibration, hard shifts.
Typical repair cost
USD 900-1,800 clutch kit; USD 2,000+ flywheel/additional work.
Codes / scan clues
Usually none.
Root cause: Wear, heat and release-bearing failure.
Quick check
- Test high-gear acceleration for slip.
- Listen with clutch pedal in/out.
- Check bite point and service records.
- Inspect for modified shifter/drivetrain abuse.
Fault 8
AWD tyre mismatch causing driveline stress
Affects
All AWD Impreza.
Symptoms
Binding, vibration, centre coupling/CVT stress, uneven tyre wear.
Typical repair cost
USD 500-1,000 tyre set; USD 1,500-4,000 driveline/CVT consequences.
Codes / scan clues
AWD/CVT pressure or ABS wheel-speed codes possible.
Root cause: Different rolling circumference forces AWD driveline slip.
Quick check
- Check all four tyre brands/sizes/tread depths.
- Drive tight circles and feel binding.
- Ask why one tyre was replaced alone.
- Inspect alignment and accident history.
Inspection pack
Printable checklist for the viewing
The free page helps you decide whether the car is worth seeing. The paid guide is the ordered, printable checklist you use at the car.
- VIN recall check for Subaru Impreza 2017-2023.
- Service invoices matching the engine/drivetrain and mileage, not only stamped history.
- Inspect tyres, leaks, accident repair and water entry before the test drive.
- Look specifically for evidence related to CVT hesitation, valve-body or chain/pulley wear.
- Check every warning light, infotainment function, climate mode, camera/sensor warning and battery condition before moving.
- Cold start, full warm-up, low-speed manoeuvres and motorway-speed pull for Subaru Impreza.
- Recheck for smells, warning lights, harsh shifts, vibration or coolant/oil leaks after the drive.
- Scan engine, transmission, ABS/body and driver-assist modules where fitted.
- Treat cleared codes or incomplete readiness monitors as negotiation or walk-away evidence.
Bottom line
Buy: 2019-2023 CVT with recall printout, smooth low-speed drive and no oil-use history. Manual hatch if clutch is quiet and not abused.
Avoid: Oil light, engine knock or low dipstick. CVT warning lights or seller says "needs reset".
Quick answers
Subaru Impreza buyer questions
The short versions of what this page answers in full.
What are the most common Subaru Impreza 2017-2023 problems?
The highest-impact documented faults are: CVT hesitation, valve-body or chain/pulley wear; FB20 oil consumption or low-oil damage; Ignition coil / PCV / brake hose recall status. This guide covers 8 faults in total, each with symptoms, typical repair costs, and checks you can do at a viewing.
Which Subaru Impreza years are the best to buy?
2019-2023 stand out in this generation. 2019-2023 CVT with recall printout, smooth low-speed drive and no oil-use history. Manual hatch if clutch is quiet and not abused.
Which Subaru Impreza should I avoid?
Oil light, engine knock or low dipstick. CVT warning lights or seller says "needs reset".
Is the Subaru Impreza 2017-2023 a reliable used buy?
BYBA scores it 6.7/10 (buy with checks). 1 walk-away risk, 4 serious faults, 3 minor faults documented for this generation, weighted by severity and repair cost. Biggest factor: ignition coil / pcv / brake hose recall status.
Get updates when this guide changes
Recalls get added, repair costs shift, and new fault patterns show up in the data. Leave an email and we'll tell you when the Subaru Impreza guide gets a meaningful revision. Nothing else, no selling your address.