My vehicle started shaking on friday. I parked it, later started it and started to move. Heard a crash. My transmission and engine fell. Motor mounts broken, damaged my axle.
2007 Mazda Mazda3 engine problems
moderate 15 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 15 engine complaints filed for the 2007 Mazda Mazda3, here's the actual mileage breakdown — failures cluster heaviest at 125,000-150,000 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 5 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: Multiple 2007 Mazda3 owners report unexplained engine stalls at stops and during acceleration, engine mount failures causing severe damage, and catastrophic engine failure with metal shards in oil. Mazda has not addressed these recurring issues despite customer complaints and apparent legal action regarding timing chain defects.
Fifteen 2007 Mazda3 owners describe a pattern of serious engine problems. The most common complaint is engine stalling—vehicles shut off while stopped at traffic lights, sometimes while braking, and again during acceleration. Several owners hit the shoulder after losing power steering mid-drive because the engine died. One owner replaced the battery, but the stalling returned; a dealer inspection found nothing wrong.
Engine mount failure appears in multiple reports. Bolts are reportedly loose or defective. In one case, the motor mounts failed completely, dropping the transmission and engine onto the axle. Another owner documented the issue on Mazda3Forums, noting Mazda has not issued a recall despite multiple complaints.
Two owners describe catastrophic engine failure. One heard a loud noise on the freeway, lost power, and found oil mixed with metal shards and a cracked engine block. Another experienced abnormal noise and complete oil consumption at 192,000 miles.
Additional failures include a purge valve that clogged at 32,500 miles, timing chain ticking (owner cites a lawsuit against Mazda), an oxygen sensor cross-threaded at the factory with the dealer refusing repair, and a fiberglass heat shield deteriorating and burning on the exhaust. Dealers either found nothing wrong or refused warranty help. Mazda corporate reportedly showed little concern.
Same Mazda Mazda3 engine reports on nearby years: 2005 · 2006 · 2008 · 2010
Failure modes owners describe
Engine stalling at stops and acceleration
Engine shuts off while stopped at traffic lights, applying brakes, or during acceleration from a stop. Vehicle shakes badly before stalling. Happens repeatedly and creates safety risk, particularly when driver loses power steering.
When: At traffic lights or during acceleration; varies by owner but recurring issue
Symptoms owners cite: engine shakes violently at stops; engine dies while braking; engine stalls during acceleration; loss of power steering when engine cuts off
Codes mentioned: P2177
Repairs/costs cited: Owners cite purge solenoid valve as suspected cause; no repairs documented in narratives
Recalls/TSBs owners mention: Mazda reportedly unaware or unconcerned per owner; no recalls or TSBs mentioned
Engine stall with electrical light cascade
Vehicle loses power steering and engine simultaneously while driving, with check engine light, power steering light, and battery lights flashing on and off. Requires key cycle restart to recover.
When: Low-speed driving (30-35 mph); low mileage (around 35,510 miles)
Symptoms owners cite: steering wheel locks up; engine shuts off; check engine light illuminates; power steering light illuminates; battery light illuminates; all lights flash simultaneously
Repairs/costs cited: Authorized dealer claimed nothing wrong with vehicle after inspection
Recalls/TSBs owners mention: Recall mentioned by owner but customer service rep denied knowledge of recall; owner forced to pay out of pocket
Engine failure with catastrophic damage
Engine experiences sudden loud noise described as running over debris, vehicle loses power, and engine stops responding. Post-failure inspection reveals oil mixed with metal shards and crack in engine block.
When: Freeway driving; failure occurred at unspecified mileage
Symptoms owners cite: loud jolting noise while driving; no engine response to throttle; oil and metal shards visible; cracked engine block
Repairs/costs cited: Engine failure confirmed by dealership; engine replacement required
Recalls/TSBs owners mention: Manufacturer contacted but took no action or assistance
Engine mount failure
Engine mounting bolts loose or defective, allowing excessive movement. Owners report this as widespread issue in forums. In one case, motor mounts failed completely, causing engine and transmission to drop and damage axle.
When: Varies; one incident around low mileage, another unspecified; 2007 Mazda3 and Mazdaspeed3 affected
Symptoms owners cite: engine vibration; engine movement in bay; transmission and engine drop; damaged axle; hearing crash noise from engine area
Repairs/costs cited: Repair costs not specified in most cases; one owner reported motor mount replacement and axle damage repair needed
Recalls/TSBs owners mention: No recalls or recommendations issued despite multiple complaints; issue documented on Mazda3Forums
Purge valve malfunction
Purge control valve sticks or clogs, triggering check engine light. One case documented with dealer diagnosis and replacement at relatively low mileage.
When: Approximately 32,500 miles
Symptoms owners cite: check engine light illuminates; valve sticking or clogged
Repairs/costs cited: Purge valve replaced; failure codes reset by dealer
Timing chain noise and wear
Engine produces ticking noise from timing chain area. Owner references lawsuit filed against Mazda for timing chain issues in this generation. Repair cost cited as over $1,500.
When: Unspecified mileage
Symptoms owners cite: ticking noise from engine
Repairs/costs cited: Repair cost over $1,500
Recalls/TSBs owners mention: Owner states Mazda has known about this issue for years without action
Oxygen sensor cross-threading at factory
Oxygen sensor #2 installed cross-threaded into exhaust manifold at factory, causing damage. Dealer refused warranty repair because owner identified problem rather than dealer.
When: Factory installation defect; discovered during ownership
Symptoms owners cite: oxygen sensor damage at manifold
Repairs/costs cited: Dealer refused replacement due to owner discovery vs. dealer diagnosis
Heat shield deterioration and burning
Fiberglass tunnel heat shield deteriorates and fragments fall onto exhaust piping and catalytic converter, where pieces burn. Creates burning smell detectable inside and outside vehicle.
When: Unspecified timing
Symptoms owners cite: burning smell inside and outside vehicle; fiberglass fragments burning on exhaust; deteriorated heat shield
Repairs/costs cited: Not repaired in narrative
Excessive oil consumption
Engine consumes all oil, noted by owner through abnormal noise and low oil level. No diagnosis performed.
When: Approximately 192,000 miles
Symptoms owners cite: abnormal engine noise; excessive oil consumption
Repairs/costs cited: Not diagnosed or repaired
Recalls/TSBs owners mention: Manufacturer notified but no response documented
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Had engine trouble with your 2007 Mazda Mazda3?
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 2007 Mazda Mazda3?
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 51,374 and 118,000 miles, with the median around 75,000. A quarter of owners report trouble before 51,374; a quarter make it past 118,000. 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/2007/Mazda/Mazda3.
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.