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EnginePart report

2005 Mercury Monterey Engine Problems

Complaints
5about this part
Share
4%of 119 total for the year
Median mileage
125,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the engine of the 2005 Mercury Monterey, 4% of the 119 complaints for this model year. Where a mileage was given, the median is 125,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I purchased my 2005 Mercury Monterey in feb/march 2018, in july of 2018 I go out to start my van to leave and nothing happens wont start, so we look under the hood every thing seems fine, I call the tow truck to have it towed to the shop, oil spills out all over my driveway, there is a huge hole in the engine, so we had a used engine put in march 2019, sept 2019 I go to start my van and nothing, this time I get out and notice a huge puddle of oil.. We get down to look to see why and yet again there is another hole in the newer engine!”

NHTSA complaint #11255668, filed 2019-09, 190,000 miles

“It was raining and my vehicle kept going into neutral and stalling. I'd press the gas, nothing would happen. It wouldn't go into reverse. When I put it in neutral the engine just revved up. Putting it park was ok. Check engine codes p0715 and p0340 appeared. A flashing check engine light (!), and solid check engine light appeared. Putting in drive, it would only go into 3rd gear. 1st gear worked if I moved the prndl to 1. Reverse didn't work at all. I could have easily been killed if this happened while driving anywhere but my neighborhood. …”

NHTSA complaint #10546254, filed 2013-09, 85,000 miles

“Multiple times loss of power and ability to drive. Rpm's jumped all over and vehicle would stall or not start at all. In and out of shop over 2 months leaving me without a vehicle or driving a loaner car. Finally replaced PCM and wiring harness. Not even a year later the exact same problem is occurring again and warranty is expired. Also found out another vehicle was in the shop at the same time with the same problem.”

NHTSA complaint #10512909, filed 2013-05, 125,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2007229%
200612%
200554%
200472%

Other parts of the 2005 Mercury Monterey

Transmission and drivetrain
97 complaints
Body and structure
8 complaints
Electrical system
6 complaints
Air bags
3 complaints
Brakes
3 complaints
Seats
3 complaints
Engine cooling
2 complaints
Other or unknown
2 complaints
Equipment
1 complaints
Fuel system
1 complaints
Suspension
1 complaints
Vehicle speed control
1 complaints

← All problems reported for the 2005 Mercury Monterey

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology