Water Quality When Mixed With Engine Coolant
full bulletin at NHTSA ↗2014 Chrysler 300 engine problems
moderate Owners of the 2014 Chrysler 300 have filed 15 NHTSA complaints about the engine, typically surfacing around 96,000 miles at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2010 300 | 11 |
| 2011 300 | 9 |
| 2012 300 | 19 |
| 2013 300 | 18 |
| 2014 300 (this page) | 15 |
| 2015 300 | 3 |
| 2016 300 | 3 |
| 2017 300 | 3 |
When does it fail?
Of the 15 engine complaints filed for the 2014 Chrysler 300, 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 engine complaint has been filed on this vehicle in over 10 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 engine 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.
wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
full bulletin at NHTSA ↗ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY review and follow instructions from the latest STAR Online S1809000007 available on Dealer Connect. Also, consider the following: 1) Remove OFA 2) Replace only the oil inlet O-ring and gaskets (seals kit in SOL above). 3) Re-install the OFA. For 2023MY and beyond use black O-ring. For 2022MY and prior use red O-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
full bulletin at NHTSA ↗ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY review and follow instructions from the latest STAR Online S1809000007 available on Dealer Connect. Also, consider the following: 1) Remove OFA 2) Replace only the oil inlet O-ring and gaskets (seals kit in SOL above). 3) Re-install the OFA. For 2023MY and beyond use black O-ring. For 2022MY and prior use red O-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
full bulletin at NHTSA ↗ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY (with mileage above 30,000) review and follow instructions from STAR Online S1809000007 REV. C available on Dealer Connect. Also, consider the following: 1) Remove OFA 2) Replace only the oil inlet O-ring and gaskets (seals kit in SOL above). 3) Re-install the OFA. For 2023MY and beyond use black O-ring. For 2022MY and prior use red O-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2014 Chrysler 300 has generated complaints across several distinct engine and exhaust issues. Early-ownership failures include unexpected power loss on highways (one owner at just a few days in), stalling with burning odors, and deceleration at various speeds. Dealership diagnostics point to loose fuses and false transmission codes in some cases.
Cylinder misfires (P0302) appear frequently, with one limousine operator at 116,000 miles noting that spark plug and coil pack replacement didn't stick; the mechanic recommended—but couldn't perform due to cost—a cylinder head replacement. That owner found other 300 drivers reporting identical issues, including some who already replaced heads.
Mechanical failures include a bad MDS lifter destroying the camshaft around 75,000 miles, and a head gasket #6 issue. One owner discovered that Chrysler extended warranty to 150,000 miles on 2011–2013 models for the same head gasket failure but refused to cover his 2014, despite the identical defect.
Oil leaks appear in multiple narratives—from oil filter housing, oil coolers, and even an exhaust system with a manufacturing kink that burned through. Catalytic converters fail prematurely. One customer had a head valve and cylinder replaced at 23,814 miles, only to see the failure recur.
Several owners report that recalls addressing these issues were applied to earlier model years but not to 2014, even where the defects are identical.
Same Chrysler 300 engine reports on nearby years: 2012 · 2013
Failure modes owners describe
Loss of acceleration / power loss on highway
Vehicle loses acceleration and power while driving on highway, requiring multiple gas pedal presses or brake application to regain response. Check engine light illuminates. Reported as loose fuse and transmission differential ratio false code at dealership.
When: Early in ownership; reported at 9/17/2013 and 9/24/2013
Symptoms owners cite: Sudden loss of acceleration while driving; Check engine light (amber) illumination; Malfunction light remains on after regaining acceleration; Intermittent power delivery
Codes mentioned: Transmission differential ratio (false code)
Repairs/costs cited: Dealership replaced loose fuse; no permanent resolution reported
Cylinder #2 misfire
Check engine light comes on, diagnostic reveals P0302 misfire code on cylinder #2. After spark plug and coil pack replacement, code returns on road test. Compression and fuel injectors test normal. Mechanic recommends cylinder head replacement. Multiple owners reported same issue.
When: 116,000 miles; out of warranty
Symptoms owners cite: Check engine light illumination; Engine misfire on cylinder #2; Misfire code returns after initial repair
Codes mentioned: P0302 (Cylinder #2 misfire)
Repairs/costs cited: Spark plugs and coil packs replaced; did not resolve. Cylinder head replacement recommended but costly and not performed by reporter.
Bad MDS lifter causing engine knock
Progressive engine knock develops over weeks that worsens. When engine is disassembled, a bad MDS (multi-displacement system) lifter is discovered that has destroyed the camshaft. Owner notes this is a known issue on forums for 5.7L and 6.4L Hemi engines.
When: Around 75,000 miles
Symptoms owners cite: Engine knock that progressively worsens over weeks; Internal engine damage from failed lifter
Repairs/costs cited: Engine tear-down required; bad lifter and damaged camshaft discovered
Engine vibration and check engine light
Vehicle vibrates briefly while driving, then returns to normal. Failure becomes regular occurrence with check engine light illumination. Dealer diagnoses engine failure but does not repair vehicle.
When: 96,000 miles
Symptoms owners cite: Vehicle vibration while driving at various speeds; Check engine light illumination; Intermittent vibration becoming regular
Recalls/TSBs owners mention: Technical Service Bulletin 09-002-14 mentioned; manufacturer referred contact to NHTSA Hotline
Unexpected deceleration and stalling
Vehicle independently decelerates and stalls at various speeds, failure occurs three times. Burning odor detected from rear driver's side on last occurrence. Dealer attributes to bad gasoline quality, but failure persists with mid-grade fuel.
When: 700 miles (early in ownership)
Symptoms owners cite: Independent deceleration without driver input; Engine stalling at various speeds; Burning odor from rear driver's side
Repairs/costs cited: Not repaired
Recalls/TSBs owners mention: Manufacturer notified
Exhaust system manufacturing defect (kinked pipe)
Loud engine noise from burnt-off pipe between catalytic converter and muffler. Investigation reveals a kink in exhaust pipe that was present at manufacture, causing stress on the bend. Entire exhaust system from catalytic converter back requires replacement.
When: 42,525 miles
Symptoms owners cite: Loud engine noise; Burnt-off exhaust pipe
Repairs/costs cited: Entire exhaust system from catalytic converter back replaced
Recalls/TSBs owners mention: STAR case #101881957 filed; dealer unable to obtain confirmation Chrysler received report
Engine misfire with check engine light and shaking
Vehicle shakes at 50-55 mph and check engine light flashes. After pulling over, light stays on. Dealership diagnostic returns P0302 code. Owner notes Chrysler has recalled this issue in prior model years but not 2014, despite identical problem.
When: Not specified
Symptoms owners cite: Vehicle shaking at moderate speed; Flashing check engine light; Check engine light remains on after stopping
Codes mentioned: P0302
Recalls/TSBs owners mention: Recall exists for prior model years for same issue, but not applied to 2014
Head/cylinder valve failure with shaking and loss of acceleration
While driving at 15 mph, vehicle shakes and fails to accelerate. Dealer diagnoses that head valve and cylinder need replacement. Vehicle is repaired but failure recurs shortly after.
When: 23,814 miles
Symptoms owners cite: Vehicle shaking while driving; Loss of acceleration; Recurring failure after repair
Repairs/costs cited: Head valve and cylinder replaced; failure recurred
Recalls/TSBs owners mention: Manufacturer notified of recurring failure
Oil filter housing leak
Oil leaks underneath vehicle. Dealer inspection reveals oil filter housing leak requiring replacement. Manufacturer states VIN not included in recall.
When: 132,197 miles; also reported at 46,277 miles
Symptoms owners cite: Oil leaking underneath vehicle
Repairs/costs cited: Oil filter housing replacement needed but not performed by reporters
Recalls/TSBs owners mention: Manufacturer states VIN not included in recall; case filed
Head gasket #6 failure
Check engine light comes on. Dealership diagnoses head gasket #6 failure. Owner discovers Chrysler extended warranty to 150,000 miles on left side engine for 2011, 2012, 2013 models for same issue, but refuses coverage for 2014 despite identical problem.
When: Not specified; warranty cutoff suggests early to mid-life
Symptoms owners cite: Check engine light illumination
Repairs/costs cited: Head gasket #6 replacement needed
Recalls/TSBs owners mention: Extended warranty offered on 2011-2013 models for same issue, not applied to 2014
Oil cooler leak
Oil leaks from vehicle at various speeds without warning. Dealer repair involves oil cooler replacement.
When: 115,329 miles
Symptoms owners cite: Oil leaking during vehicle operation at various speeds
Repairs/costs cited: Oil cooler repaired at Lee's Summit Dodge Chrysler Jeep Ram
Recalls/TSBs owners mention: Manufacturer notified but unable to assist
Catalytic converter degradation
During scheduled maintenance, dealer informs owner catalytic converter needs replacement. Vehicle makes loud sounds while being driven.
When: Approximately 100,000 miles
Symptoms owners cite: Loud sounds while driving; Catalytic converter failure
Repairs/costs cited: Catalytic converter replacement needed but not performed by reporter
Recalls/TSBs owners mention: Manufacturer not contacted
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Tl* the contact owned a 2014 Chrysler 300. While driving 15 MPH, the vehicle shook and failed to accelerate. The contact coasted the vehicle over to the side of the road. The contact was able to restart the vehicle and drove to the dealer where it was diagnosed that the head valve and cylinder needed to be replaced. The vehicle was repaired; however, the failure recurred. The manufacturer was…
The contact owns a 2014 Chrysler 300. The contact stated while driving at an undisclosed speed, the vehicle briefly vibrated before returning to normal functionality however, the failure became a regular failure. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the engine. The vehicle was not repaired. After investigating the…
Had engine trouble with your 2014 Chrysler 300?
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 engine problem on the 2014 Chrysler 300?
It's a documented issue but not catastrophic. 15 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 12 complaints that reported odometer mileage, most engine failures cluster between 42,643 and 114,000 miles, with the median around 96,000. A quarter of owners report trouble before 42,643; a quarter make it past 114,000. 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 $3,100 for engine 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 engine?
No active recalls currently cover engine 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/2014/Chrysler/300.
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.