TSB: REVISION NOTICE September 03, 2019 Rev1: ? Applicability has been updated to include 2018 ? 2019 model year Corolla vehicles. Any previous printed versions of this bulletin should be discarded. Some 2014 ? 2019 model year CK313 CVT Corolla vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P2757 (Torque Converter Clutch Pressure Control Solenoid Performance [Shift Solenoid Valve SL]). Follow the Repair Procedure in this bulletin to address this condition.
full bulletin at NHTSA ↗2018 Toyota Corolla powertrain problems
severe Owners of the 2018 Toyota Corolla have filed 11 NHTSA complaints about the powertrain at roughly $2,500 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See powertrain across all vehicles →
Complaints
11
Recalls
0
Avg fix
$2,500
| Model year | powertrain complaints |
|---|---|
| 2014 Corolla | 22 |
| 2015 Corolla | 29 |
| 2016 Corolla | 20 |
| 2017 Corolla | 16 |
| 2018 Corolla (this page) | 11 |
| 2019 Corolla | 52 |
| 2020 Corolla | 35 |
| 2021 Corolla | 19 |
| 2022 Corolla | 15 |
1crash
1injury
When does it fail?
Of the 11 powertrain complaints filed for the 2018 Toyota Corolla, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA powertrain complaint has been filed on this vehicle in over 6 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections have been updated. October 30, 2017 Rev1: ? Applicability has been updated to include 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes SB No. T-SB-0012-13. Service Bulletin No. T-SB-0012-13 is obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated
full bulletin at NHTSA ↗TSB: Some 2014 ? 2018 model year Corolla and 2017 ? 2018 model year iM vehicles equipped with the K313 Continuously Variable Transaxle (CVT) may exhibit a high-pitched hiss or whine noise after the vehicle has reached normal operating temperature. This condition may be caused by the valve body plate inside the CVT assembly. Follow the Repair Procedure in this bulletin to address this condition.
full bulletin at NHTSA ↗TT: Some 2014 ? 2018 model year Corollas may experience a dark red or black colored fluid leak between the engine and transmission bell housing.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2018 Corollas describe a range of CVT transmission and powertrain control failures. One owner at 76,099 miles experienced complete loss of acceleration, whining noise, and high RPM, with OBD2 scan codes pointing to torque converter fault—the dealer quoted full transmission replacement. Multiple owners report limp-mode activation on freeways, where the vehicle caps speed at 40 MPH despite RPM climbing to 4,000, occurring multiple times over the vehicle's life and repeating after cooling periods.
Idle and surge issues are frequent. Several owners describe engine idle dropping to 500 RPM and severe shaking when stopped at lights—the shaking stops only when shifting to Neutral or Park. Others report unexpected forward surges while sitting at red lights, with one describing it as feeling like a rear-end collision. After these surges, acceleration becomes sluggish and delayed.
Cruise control malfunction appears tied to powertrain control. One owner reports high RPM surges triggered by cruise control on downhill grades, with Toyota refusing to acknowledge the issue despite other owners reportedly getting successful repairs or vehicle exchanges. Another notes the same high-RPM cruise control problem persisted after a fuel system recall service. Transmission shift delays occur at highway speeds, where the car refuses to upshift, then suddenly drops RPM below 1,000. Toyota has denied warranty coverage and stated no recalls or voluntary repairs apply to some VINs, despite the same issues affecting other model years.
Same Toyota Corolla powertrain reports on nearby years: 2015 · 2016 · 2017 · 2019 · 2020
Failure modes owners describe
CVT transmission failure with torque converter codes
CVT transmission loss of power and refusal to accelerate, accompanied by whining noise. Scan retrieved torque converter-related DTCs indicating internal transmission fault requiring full replacement.
When: 76,099 miles
Symptoms owners cite: abnormal whining sound from transmission; failure to accelerate when depressing pedal; tachometer reads high while exiting highway; hesitation at stoplight; check engine light illuminated
Codes mentioned: P0741, P075B, P1604, P2757, P2820
Repairs/costs cited: CVT transmission replacement quoted by independent mechanic; repair not completed
Recalls/TSBs owners mention: Manufacturer denied assistance
Low idle and shaking at stop with transmission in Drive
Engine idle drops to 500 RPM and vehicle shakes severely after 15+ minutes of driving and prolonged stop. Issue persists for years but appears to be related to CVT transmission behavior when in Drive with foot on brake. Shifting to Neutral or Park immediately stops shaking.
When: Began around 25,000 miles; ongoing for years
Symptoms owners cite: idle drops to 500 RPM at red lights or drive-thru lines; severe shaking at idle as if stalling; condition repeats after shifting back to Drive; no check engine light
Repairs/costs cited: No repairs reported; issue not AC compressor or cooling fan related
Electric fuel pump activating with engine off
Fuel pump motor runs continuously while vehicle parked in garage and engine is completely off. Failure recurring. Reported early in vehicle ownership at low mileage.
When: 5,500 miles
Symptoms owners cite: fuel pump motor runs while engine off and vehicle parked; recurrent failure
Repairs/costs cited: No repair performed
Recalls/TSBs owners mention: Manufacturer case number 2001171560 issued; owner directed to dealership
Speed limiter/limp mode—transmission slipping and high RPM
Vehicle suddenly limits maximum speed to 40 MPH on freeway despite RPM climbing to 4,000, occurring multiple times (3+ instances reported). Transmission becomes noisy and slippery. Problem occurs after extended highway driving and repeats after cooling period.
When: Around 90,000 miles; 3 separate incidents reported
Symptoms owners cite: vehicle speed limited to 40 MPH maximum; RPM runs to 4,000 while speed capped; transmission noises and slipping sensation; safety hazard
Repairs/costs cited: No repairs completed; owner reports no money for transmission repairs
Recalls/TSBs owners mention: Toyota refused warranty coverage and stated no recalls or voluntary repairs apply to this VIN, despite same issue affecting other model years
RPM surge on downhill or cruise control
RPM jumps to 4,000 when attempting to slow vehicle on downhill grades, particularly when cruise control is engaged. Toyota dealerships refusing to acknowledge issue despite other owners reporting successful repairs or vehicle exchanges.
When: Mileage not stated
Symptoms owners cite: RPM jumps to 4,000 on downhill or during cruise control deceleration; unsafe feeling during long-distance driving
Recalls/TSBs owners mention: Dealerships refusing to acknowledge; other owners reported getting cars fixed or exchanged
Unexpected surge at stop light
Vehicle surges forward without driver input while stopped at red light. No warning lights. Single instance reported; no diagnostic testing performed.
When: 30,000 miles
Symptoms owners cite: vehicle surges forward while stopped at red light; no warning indicators
Repairs/costs cited: No diagnostic testing performed
Recalls/TSBs owners mention: Manufacturer case opened
Transmission shift delay and hesitation at high RPM
CVT transmission fails to upshift properly during acceleration. At highway speeds, RPM remains elevated and vehicle refuses to shift into next gear. RPM then suddenly drops below 1,000 and car quits accelerating until shift occurs. Cruise control also malfunctioning.
When: Mileage not stated
Symptoms owners cite: vehicle drives at high RPM without upshifting; delayed shift during highway acceleration; sudden RPM drop below 1,000; loss of acceleration until shift completes; cruise control malfunction
Unexpected forward surge at red light with delayed acceleration response
Multiple instances of vehicle surging forward unexpectedly while stopped at red light, described as feeling like rear-end collision. After surge occurs, pressing accelerator results in delayed engine response and sluggish acceleration ('bogging'). Recurring issue.
When: Mileage not stated
Symptoms owners cite: unexpected forward surge at red light; delayed acceleration response after surge; sluggish engine 'bog' when accelerating after surge; multiple occurrences
High RPM surge during cruise control—stall hazard post-recall
After fuel system recall service, cruise control causes engine to rev to high RPM with potential stall risk, same as before recall work. Issue identified as safety problem related to cruise control function.
When: Post-recall service
Symptoms owners cite: cruise control triggers high RPM surge; potential stall hazard; issue persists despite fuel recall service
Repairs/costs cited: Fuel system recall performed but did not resolve transmission/cruise control issue
Recalls/TSBs owners mention: Fuel system recall completed; issue not resolved
Synthesized from 11 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Car recently is not shifting properly. Drives at high rpms and if I accelerate too quickly say I get up to 80 MPH on highway car won't shift into next gear the rpms suddenly drop all the way down to under 1000 and quits accelerating until it jumps back into gear. Have to let foot off the gas for it to shift and cruise control has been not functioning properly either.
Air bags didn't deploy when I had an accident.*dt*dt*jb*jb
Had powertrain trouble with your 2018 Toyota Corolla?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2018 Toyota Corolla?
It's a meaningful issue. 11 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Based on the 11 complaints filed, powertrain issues most often appear around 29,201 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Toyota/Corolla.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.