While driving and going from driving for awhile to stop and go it stalls. Has happened now 3 + times in driving situations. Have had car checked out and said nothing is wrong by two different garages. Stalling in traffic is not safe.
2012 Hyundai Tucson powertrain problems
severe 24 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
24
Recalls
0
Avg fix
$2,500
3crashes
1fire
When does it fail?
Of the 24 powertrain complaints filed for the 2012 Hyundai Tucson, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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 7 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: 2012 Tucson owners report catastrophic engine seizure, thrown rods, transmission disengagement during driving, and unexplained stalls—often at highway speeds with no warning light. Repairs easily exceed $12,000; Hyundai coverage is inconsistent, and dealers struggle to diagnose intermittent issues.
The 2012 Tucson's powertrain generates a pattern of serious failures that strike without warning. Engine seizure and rod bearing collapse appear across multiple narratives, with owners describing sudden lockup at 62,000 miles, metal shavings in the oil pan, and fires from the engine bay. One owner's engine replacement cost $12,118; another faced a $5,500 engine bill after the motor threw a rod on the highway. The 2.4L Theta II engine is cited in class action litigation.
Transmission troubles compound the problem. Owners report the transmission disengaging mid-drive—RPMs spike but the car won't accelerate, as if the shifter is in neutral despite showing Drive. One owner faced a $4,200 transmission pump replacement 100 miles after an engine swap. Other complaints center on the shifter getting stuck in reverse, vehicles rolling out of park with no key in the ignition, and hard shifting with the gear indicator vanishing from the dash.
Power loss strikes without pattern. Vehicles stall at 70 mph on interstate highways; engines won't restart cleanly; a few cases show all dashboard lights illuminating before shutdown. One owner's 2010 Tucson had the same transmission issue, and now the 2012 exhibits it too. Dealers consistently fail to replicate intermittent problems during test drives. Hyundai's warranty assistance appears inconsistent—some owners report full engine coverage while others face 35% out-of-pocket costs for the same failure.
Same Hyundai Tucson powertrain reports on nearby years: 2010 · 2011 · 2013 · 2014 · 2015
Failure modes owners describe
Engine seizure and mechanical failure (rod bearing failure, thrown rod)
Complete engine seizure, rod bearing failure, thrown rods, and engine block damage without prior warning or check-engine light. Metal shavings found in oil. Owners report sudden loss of power, engine knock, smoke, or fire from the engine bay.
When: 62,000 to 132,000 miles; one incident at 40,000 miles on replaced engine
Symptoms owners cite: Sudden engine seizure with no warning light; Engine locked up while driving; Engine knock progressing from ticking to loud knock during acceleration; Metal shavings in oil pan; Smoke from engine bay; Fire in engine compartment; Engine won't restart or hesitates to restart
Repairs/costs cited: Engine replacement required; costs cited as $12,118.41, $5,500 minimum for engine alone, $3,500 out-of-pocket after Hyundai refused to cover full cost. Rod bearings replaced per recall on some vehicles.
Recalls/TSBs owners mention: Recall 16V628000 mentioned for transmission; Rod bearing recall exists. Hyundai stated to dealership that these are 'major problems' with the engines. Some owners refused to pay 35% out of pocket; some got full replacement coverage while others did not. One owner reported engine covered free on other Tucson owners but not theirs.
Transmission loss of power / neutral engagement failure
Transmission disengages during driving or fails to engage; engine revs but vehicle does not accelerate. Vehicle behaves as if transmission is in neutral when shifter shows Drive. Intermittent issue difficult for dealers to reproduce.
When: At various speeds and mileages; one case at 100,000 miles; another after 100 miles post-engine replacement
Symptoms owners cite: Engine RPM shoots up but car does not accelerate; Transmission appears to be in neutral while shifter is in Drive; Loss of power while merging or accelerating into traffic; Intermittent loss of acceleration from stop; No acceleration response despite depressed accelerator; Transmission fluid pump failure reported
Repairs/costs cited: Transmission replacement on 2010 Tucson; transmission rebuilt transmission installed at 100,000 miles on this 2012; transmission fluid pump failure repair cost $4,200. Dealer unable to diagnose intermittent issues during test drive.
Recalls/TSBs owners mention: Recall 16V628000 referenced for 2016 Tucson transmission issue. One owner reported transmission problem known to manufacturer by 2/5/2019 but was not alerted. One owner noted Hyundai coverage inconsistent across owners.
Engine stall / no-start with reduced power
Engine stalls suddenly while driving at highway speeds without warning. Vehicle loses power or won't restart immediately. Doors stop operating, lights dim, or all dashboard lights illuminate.
When: Various mileages from 700 to higher; one incident at 70 mph, another on interstate at 100 miles
Symptoms owners cite: Sudden engine stall at highway speed; Engine reduced power momentarily before stall; Engine hesitation to restart; All dashboard lights illuminate; Loss of power without warning indicator; Engine knocking after restart
Repairs/costs cited: Metal shavings in oil found on one; hand-cranking required to restart on another. Rod bearings failed on one.
Recalls/TSBs owners mention: One dealership stated Hyundai should cover rod bearing issue fully. One owner reported manufacturer made aware but offered no assistance.
Transmission shift malfunction and park disengagement
Transmission shifter difficult or stuck in reverse; transmission shifts hard; vehicle shifts gears unintentionally or won't engage properly. Vehicle rolls out of park without key in ignition or brake depressed.
When: 50,000 to 66,700 miles; one at 700 miles
Symptoms owners cite: Gear shifter stuck or difficult to transition to/from reverse; Vehicle shifts from Drive to Drive 1 independently; Vehicle rolls out of park unintended; Manual lever position does not match indicated gear on dash; Difficult to start vehicle without manipulating gear shifter; Transmission hard shift when shift indicator missing from dashboard
Repairs/costs cited: Manual lever position switch diagnosed as needing replacement; not repaired. Dealer attempted repair on three occasions but failure persisted.
Recalls/TSBs owners mention: Manufacturer offered no assistance. One owner reported Hyundai corporate called it a 'campaign' item but no recall found.
Reduced engine power / RPM limiter / limp mode
Engine will not rev above 2,500 RPM even with accelerator fully depressed. Vehicle loses power suddenly while driving, affecting acceleration and highway merging. Resetting (turning vehicle off and on) temporarily resolves issue.
When: Intermittent; ongoing issue since purchase on one vehicle
Symptoms owners cite: RPM limited to 2,500 max despite full throttle; Sudden power loss at highway speeds; Inability to accelerate properly when merging; Going 30 mph onto 70 mph roadway with no power; Intermittent issue
Repairs/costs cited: Dealership unable to fix or address despite multiple service visits. Turning vehicle off and back on temporarily resolves.
Recalls/TSBs owners mention: Dealer unable to diagnose; no recall or repair noted.
All-wheel drive (AWD) system malfunction
AWD light illuminates and extinguishes intermittently; system engages and disengages without driver input. Diagnostic checks show no problem despite light warning.
When: 45,000 to 70,000 miles
Symptoms owners cite: AWD warning light comes on and off intermittently; AWD disengages while driving; Loss of all-wheel drive traction in snow
Repairs/costs cited: No repairs made; dealer stated 'sometimes you have it and sometimes you don't.'
Recalls/TSBs owners mention: Second dealer found no problem on diagnostic; manufacturer not directly contacted. One owner noted warranty criteria changed after reporting.
Synthesized from 24 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Tl* the contact owns a 2012 Hyundai tucson. The contact stated that after placing her vehicle in park and exiting the vehicle, it rolled backward and crashed into a bus. No police were contacted. The vehicle was taken to the dealer where they advised her that they were unable to diagnose the failure. The vehicle was not repaired. The manufacturer was contacted and they offered no assistance. The…
Had powertrain trouble with your 2012 Hyundai Tucson?
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 2012 Hyundai Tucson?
It's a meaningful issue. 24 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?
Across the 18 complaints that reported odometer mileage, most powertrain failures cluster between 45,000 and 100,000 miles, with the median around 73,427. A quarter of owners report trouble before 45,000; a quarter make it past 100,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
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/2012/Hyundai/Tucson.
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.