A critical failure where the internal metal drive chain of the Lineartronic CVT stretches or slips, leading to total transmission failure in 2017-2024 Subaru Imprezas.
Reviewed by SubaruReview Editorial Team · Last reviewed 2026-05-15 · Editorial standards
How this problem ranks against the other documented Impreza failures — cost, severity, and DIY difficulty at a glance.
| Problem | Years | Severity | Repair cost | DIY |
|---|---|---|---|---|
| Subaru Impreza CVT Chain Stretch and Transmission Slipping (this page) | 2017-2024 | Critical | $5,500–$8,500 | 5/5 |
| Impreza CVT Shudder | 2017-2022 | Major | $250–$4,200 | 3/5 |
This is one of several documented Impreza problems we track, and it fits inside the broader Transmission & AWD guide. If you're weighing repair against replacement, cross-check the Subaru repair-cost database and any open NHTSA recalls on your VIN before booking a shop.
The Lineartronic CVT uses a high-strength steel chain to transfer power between two pulleys. Over time, due to heat and fluid breakdown, the chain loses its tension or 'stretches.' This causes the chain to slip against the pulleys, scarring the metal surfaces and sending fine debris throughout the transmission valve body, eventually leading to a complete loss of motive power.
Premature wear of the metal chain links and pulley surfaces caused by hydraulic pressure fluctuations and fluid degradation, leading to 'slip' and physical elongation (stretch) of the chain.
Premature wear of the metal chain links and pulley surfaces caused by hydraulic pressure fluctuations and fluid degradation, leading to 'slip' and physical elongation (stretch) of the chain.
National average $5,500–$8,500. Includes parts and labor for a certified remanufactured CVT assembly at a dealership. Independent shops may be slightly lower but require specialized Subaru scan tools for relearn procedures.
Difficulty 5/5. Replacement of the CVT assembly with a revised unit or a full transmission teardown to replace the chain and variator pulleys.
Metal-on-metal chirping or whining noise under acceleration.; 'Rubber band' effect (delayed power delivery).; Severe shuddering or jerking during steady-state cruising.; AT OIL TEMP light flashing or 'Christmas Tree' dash lights.; Engine stalling when coming to a complete stop.
Owners typically pay $5,500–$8,500 at an independent Subaru shop, parts and labor included. Our Subaru CVT Replacement Cost guide breaks the job down by parts, labor hours, and where the money actually goes.
The same generation also sees Impreza CVT Shudder. Both are documented with symptoms, cost, and a permanent-fix walkthrough — see the full list in the Impreza hub.
We rate it 5/5 on our DIY scale. Most owners come out ahead with an independent Subaru shop; read labor-hour benchmarks in the repair-costs hub before you commit tools and a weekend.
It's part of our Transmission & AWD cluster, which collects every article covering the same system as this failure.
Dig into the Problems Database to plan your next maintenance sprint, or browse every model hub for buyer's guides, generation breakdowns, and known-issue lists.