2005 Mercury Mariner Engine Problems
- Complaints
- 8about this part
- Share
- 12%of 67 total for the year
- Median mileage
- 129,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the engine of the 2005 Mercury Mariner, 12% of the 67 complaints for this model year. Where a mileage was given, the median is 129,000 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 recently purchased a 2005 Mercury Mariner. Just after making my first payment, I was going down the interstate in it and it jerked like something had broken. It never lost power. Never had any gauges come on or anything. I drove it to the closest store and had it towed home and then to the ford dealership in my town. They call me 2 days later and say I need a new motor $6500. That's more than the vehicle is worth. I ask how was that when no gauges came on. His response was it's internal. Gauges won't come on. …”
NHTSA complaint #10864352, filed 2016-05, 136,000 miles“On august,2013 I went got my vehicle smoged . It passes good. Then the next day I see engine light air bag light. Then goes off when I stop. So I try take to a mechanic who I spend a good like almost 800 still light is on now bottom. Now the car dash board and the radio are so hot, it felt like something may cause a fire! I was very scared! I was near a lincoln dealership who had a service center in duarte. Ca. I never knew. A PCM was a part of a tuneup! Please this is a 2300! And I'm putting out another 1288!”
NHTSA complaint #10542349, filed 2013-09, 81,000 miles“Cd4e - engine stalling on engagement/stopping. Vehicle stalled at the red light of an exit ramp off the highway. Vehicle stalled when at a complete stop and would not engage when put into drive or reverse.”
NHTSA complaint #11204530, filed 2019-04, 150,000 miles“Anti theft dash light comes on solid for 2 or 3 seconds. Engine loses power. After 2 or 3 seconds, the anti theft light goes off and engine regains power. Has happened intermittently several times since first occurrence at various speeds and intervals.”
NHTSA complaint #10563727, filed 2014-02, 95,000 miles“Driving the car in cold weather the throttle would stick for the first couple of miles until the car was warmed up. This is a 4cyl.auto trans./ same type of vehicle as ford escape.”
NHTSA complaint #10466917, filed 2012-07, 55,000 milesRelated service bulletins
- 10109070Sep 21, 2016The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to…
Engine: other model years
Other parts of the 2005 Mercury Mariner
15 complaintsElectrical system
10 complaintsVehicle speed control
9 complaintsAir bags
8 complaintsEngine cooling
8 complaintsFuel system
7 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsTires
5 complaintsOther or unknown
4 complaintsBrakes
3 complaintsBody and structure
3 complaintsSuspension
3 complaints
← All problems reported for the 2005 Mercury Mariner
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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