Transmission issues with DTC light coming on, dealership did software update which did not resolve the problem. Transmission has rough shift and shuddering. Dealership is recommending complete transmission replacement.
2020 Hyundai Santa Fe powertrain problems
moderate 20 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
20
Recalls
0
Avg fix
$2,500
When does it fail?
Of the 20 powertrain complaints filed for the 2020 Hyundai Santa Fe, 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.
The failure pattern owners describe
Buyer takeaway: A 2020 Santa Fe powertrain carries serious risk: owners report excessive oil burning, unexplained power loss, transmission failures, and catastrophic engine damage across the fleet. Warranty disputes, months-long dealer diagnostics, and denials are common—know your coverage limits and get any engine or transmission issue evaluated by an independent shop immediately.
The 2020 Santa Fe powertrain cluster shows a pattern of severe, recurring problems. Excessive oil consumption dominates: owners burn 1 quart every 300 miles to 2 quarts weekly, with dealers offering no root-cause diagnosis or permanent fix. One owner's motor wore through pistons and eventually seized after two years of ignored burnoff. Warranty disputes are common—Hyundai has denied claims over alleged improper service, even when owners maintain meticulous records.
Transmission issues are widespread and varied. Owners describe gear hunting in Sport mode, violent jerking on engagement, stuttering at low speeds (especially after stop-start shutdown), and complete slipping that left one vehicle stuck in low gear at 40 mph. Another owner's transmission locked up at 97,000 miles; dealers recommend full replacement after software updates fail.
Engine power loss strikes without warning: sudden drops to 45 mph limp-mode, inability to accelerate past 2000 rpm, and complete shutdowns during normal driving. Some vehicles won't restart; one required 52 days and a computer replacement while stuck at the dealer. High-pressure fuel pump failures dump fuel into oil and foul spark plugs. One owner experienced the failure twice on the same vehicle.
Dealer response is consistently poor: diagnostic bafflement, code clearing without repair, unavailable appointments, and inability to replicate intermittent faults. Parts delays stretch to two months. Hyundai consumer affairs offers settlement reimbursements rather than fixes.
Same Hyundai Santa Fe powertrain reports on nearby years: 2017 · 2019 · 2021 · 2022 · 2023
Failure modes owners describe
Excessive oil consumption
Engine burns oil at abnormal rates, with owners reporting consumption of 1 quart every 300 miles to 2 quarts per week. Owners cite repeated dealer visits with no diagnosis or remedy. One owner was asked to provide service records while a warranty claim dragged on over a month; another underwent multiple engine teardowns searching for carbon buildup and exhaust valve damage.
When: Typically early-to-mid service life; one owner at 87,000 miles still experiencing the issue
Symptoms owners cite: Excessive oil burn requiring frequent top-ups; No warning lights in some cases; Engine running on reduced cylinders (one owner reported running on 3 cylinders at high mileage)
Repairs/costs cited: One dealer performed 'combustion system cleaning' with no resolution. Another owner's mechanic recommended full motor replacement due to piston damage. Some warranty denials citing improper service (e.g., oil plug installation).
Recalls/TSBs owners mention: Hyundai issued lifetime powertrain warranties in some cases but disputed coverage, claiming exhaust valve damage voids replacement. Fidelity (warranty administrator) demanded engine teardowns before approving claims.
Loss of engine power / limp mode
Engine suddenly loses power, limiting vehicle speed to 45 mph or preventing acceleration beyond 2000 rpm. Owners report abrupt onset during normal driving with little to no warning.
When: Varies: reported at 30,595 miles, during highway driving, and at traffic lights
Symptoms owners cite: Sudden drop to 45 mph maximum speed; Unable to rev beyond 2000 rpm; Flashing check engine light; Vehicle stuttering under acceleration
Codes mentioned: P1326
Repairs/costs cited: Dealer availability delays (months in some cases). One owner had to source a second dealer when the first had no appointments. No repairs completed in reported cases.
Recalls/TSBs owners mention: No remedial action documented. One case referenced a class-action lawsuit covering Theta II 2.0T engines but only for 2019 models.
Transmission shifting faults and slipping
Transmission exhibits multiple shift-quality issues including gear hunting, slipping, delayed engagements, and rough transitions. Problems intensify in Sport and Smart modes. One owner reported transmission slipped out of Park and the vehicle rolled; another reported transmission locked up.
When: Occurs throughout vehicle ownership; one lockup at 97,423 miles required a month to repair
Symptoms owners cite: Transmission hung in gear, refusing to shift despite increased throttle; Slipping into unintended gears with audible revving not reflected on tachometer; Violent jerking when gear engages; Stuttering at low speed (3–5 mph) especially after stop-start engine shutdown; Transmission warning light illuminated; Vehicle stuck in low gear unable to exceed 40 mph
Repairs/costs cited: One full transmission replacement recommended after software update failed to resolve rough shifts and shuddering. Repair timelines extending weeks to months.
Recalls/TSBs owners mention: Dealers performed software updates with no effect. No recalls or TSBs mentioned.
Failure to accelerate from stop
Accelerator pedal becomes unresponsive when attempting to drive from a complete stop. Vehicle jerks, stalls, or requires restart to regain normal operation. Incidents range from single occurrences to recurring events over weeks or months.
When: Reported at various mileages: 20,000 miles, 30,595 miles; some owners experience recurring failures
Symptoms owners cite: Accelerator pedal depressed with no response; Vehicle jerking at traffic lights; Engine light on (intermittent); Immobilizer warning light illuminated; Reduced acceleration after restart (in some cases)
Repairs/costs cited: Dealers unable to replicate faults during diagnostic visits. No repairs attempted or completed.
Recalls/TSBs owners mention: Manufacturer notified; cases opened but no remedial action documented.
Unintended acceleration and stalling
Vehicle accelerates without driver input at high speed, then stalls with delay when attempting normal acceleration. Erratic idle-stop behavior causing unexpected vehicle movement at stops.
When: Reported at 35,000 miles and during routine highway driving
Symptoms owners cite: Sudden high-speed acceleration without throttle input; Stalling with delayed response to acceleration; Vehicle jumping forward at stops when auto stop-start disengages; Vehicle not moving despite engine restart at idle-stop
Repairs/costs cited: Transmission replacement needed in at least one case. One owner disabled auto stop-start feature to avoid unsafe behavior.
Recalls/TSBs owners mention: No assistance provided in documented cases.
Engine shutdown and no-start condition
Engine shuts off unexpectedly during normal driving or while parked, with vehicle refusing to restart. One case involved total electrical failure preventing onboard diagnostics.
When: Early ownership: reported at less than 5,000 miles and during highway operation
Symptoms owners cite: Engine shuts off while parked or driving; Vehicle will not crank or start; Forward collision warning displays when attempting restart; Onboard computer unreadable by dealer diagnostic equipment; No warning lights prior to failure
Repairs/costs cited: Blown fuse and computer replacement attempted; one vehicle sat at dealer 52 days awaiting parts. Dealer unable to read onboard computer; alternating theories including 'lightning strike'.
Recalls/TSBs owners mention: Hyundai Motor of America Consumer Affairs offered settlement agreement for expense reimbursement without fixing or replacing vehicle.
Oil leak and engine seizure
Oil leak develops, sometimes without warning indicators, causing engine to seize. Owners dispute blame for leak origin (improper plug installation vs. manufacturing defect).
When: Occurred after 1.5 hours of highway driving; another at an unspecified time post-oil change
Symptoms owners cite: Oil leak with no prior warning lights; Smoke filling cabin upon restart attempt; Engine seizing after oil depletion; Visible oil on tow bed
Codes mentioned: P123600
Repairs/costs cited: Repair cost exceeded $10,000 for motor seize damage. Hyundai and Jiffy Lube disagreed on responsibility; warranty rejected as 'service issue.'
Recalls/TSBs owners mention: Hyundai denied warranty coverage citing improper service (oil plug installation).
High-pressure fuel pump failure
Fuel pump fails at highway speed, with fuel dumped into oil and spark plugs fouled. One owner experienced a second fuel pump failure on the same vehicle.
When: Reported at highway driving speeds; second occurrence on same vehicle
Symptoms owners cite: Engine RPM drops below 1500 during highway operation; Cannot maintain speed; Check engine light illuminated; Engine stalls immediately when pulled to roadside; Rough idle then stall
Repairs/costs cited: Fuel pump replacement required. One owner experienced recurrent failure.
Recalls/TSBs owners mention: No remedial action or recall mentioned.
Check engine light and diagnostic codes without repair
Check engine light illuminates and fault codes appear (P0741 noted in at least one case), but dealers clear codes and report no issues found. Problems remain unresolved or reoccur.
When: Occurring multiple times throughout vehicle ownership; one case at ~81,200 miles with repeated occurrences
Symptoms owners cite: Check engine light illumination (sometimes flashing); Fault codes in Bluelink app (P1326, P0741, P123600); Code clears itself after 50 miles in some instances; Performance issues may or may not accompany light
Codes mentioned: P0741, P1326, P123600
Repairs/costs cited: Codes repeatedly cleared by dealer with statement 'nothing wrong found.' No repairs performed.
Recalls/TSBs owners mention: No root cause diagnosis or resolution offered.
Synthesized from 20 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
2020 SantaFe Limited AWD with ~81200 miles. This is the 3rd or 4th time the P07410 code pops up with the Engine Check light. Hyundai said they found no issues and cleared the code, again. There was once when the code came up and it cleared itself after 50 miles. Not sure exactly what the cause is and Hyundai is saying "there is nothing wrong". Most recent occurrence Sept.4.2025.
As I was driving on the highway, the engine oil light came on. As I was trying to safely get off highway, the engine light came on. The engine stopped operating, but I was able to coast to a safe spot off highway. Car would not start after that. Towed to dealership. Noticeable oil was on the flat bed. Have not received update on vehicle from the dealership. Car is available for inspection.…
I had been driving about 1.5 hours when I exited the Interstate and the car engine shut off at a traffic light. When I shifted the car into park and tried to restart the car, smoke filled the cabin. Unbeknownst to me, an oil leak occurred while driving. No warning lights or other indicators that anything was awry. I had the vehicle towed to the nearest Hyundai dealer. Though the suv is under…
The contact owns a 2020 Hyundai Santa Fe. The contact stated while attempting to drive from a complete stop, the accelerator pedal was depressed, but the vehicle failed to respond. The contact stated that he shifted to park(P), turned off, and restarted the vehicle, and the vehicle responded as needed. The contact stated that the failure had recurred 5 times while driving. Additionally, the…
Had powertrain trouble with your 2020 Hyundai Santa Fe?
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 2020 Hyundai Santa Fe?
It's a documented issue but not catastrophic. 20 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Based on the 20 complaints filed, powertrain issues most often appear around 16,787 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/2020/Hyundai/Santa Fe.
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.