1997 Mercury Cougar Problems
- Complaints
- 76filed with NHTSA
- Median mileage
- 71,550miles, 26 complaints with mileage
- Recalls
- 0campaigns on record
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
- NHTSA crash rating
- —overall rating starts with 2011 models
- EPA fuel economy
- 19 mpgcombined, 3.8L 6-cyl RWD · 16 city / 24 hwy
Sources: NHTSA records for the 1997 Mercury Cougar (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
What owners report
Complaints for this model year center on the engine cooling system: owners repeatedly describe a cracked plastic intake manifold that lets coolant escape, producing a low-coolant light, steam, overheating and sometimes a stalled engine. A smaller but consistent group of complaints covers warped front brake rotors, transmission shifting problems, and fuel leaks near the tank or lines.
- Engine cooling
Cracked plastic intake manifold / coolant loss
- 30 complaints (39%)
- median 70,000 mi at 7.8 yrs old (19 state mileage)
- owner-quoted repair $837 (median of 8 quotes)
- filed 2002–2013
Owners describe the low-coolant light coming on, a sweet antifreeze smell, steam or coolant spraying from under the hood, and the temperature gauge climbing. Repairs typically involve replacing the plastic manifold, often along with spark plugs, thermostat or gasket; some owners report the replacement part failing again at the same spot. Many complaints mention that their vehicle was excluded from an extended-coverage program for the manifold, or that a reimbursement request was denied, and steering the vehicle to a stop was sometimes necessary. Reported from roughly 32,000 to 156,000 miles, with many between about 45,000 and 90,000 miles, frequently without warning during normal driving or while parked.
What to check: Ask whether the intake manifold has been replaced and keep the receipt; check the coolant level and look for coolant residue or a sweet smell around the front of the engine. A service bulletin describes an extended coverage program for this composite manifold, so confirm whether the vehicle was eligible.
2 excerpts from owner complaints in NHTSA records
“I have a 1997 Mercury Cougar. After seeing a low coolant light, and stopping the car, I opened the hood and had coolant everywhere! The car was towed to a repair shop and I was told it was a cracked intake manifold. After further research I have found this is a continual problem with ford produced automobiles.”
NHTSA complaint #10072958, filed 2004-05, 55,901 miles“We have numerous complaints with this vehicle. One of which is the brakes. Another is the cooling system. There is a recall on the manifold but our local ford dealer wlll not replace even though we have asked them to do so. In addition the engine had a problem which no one could figure out.”
NHTSA complaint #10000759, filed 2003-01, 60,000 miles - Brakes
Warped front brake rotors / brake pulsation
- 11 complaints (14%)
- median 60,000 mi at 3.7 yrs old (1 states mileage, few)
- 1 mention a crash, fire or injury
- filed 1998–2003
Owners report a pulsation or shaking in the steering wheel and pedal when braking, and sometimes longer stopping distances. Dealers commonly resurfaced or turned the rotors, and in some cases replaced them, with the shaking returning afterward; one complaint describes rotors being reworked several times within the first 27,000 miles. A few complaints also describe the pedal going near the floor because of a worn brake booster part. Mostly reported at low to moderate mileage, in some cases starting well under 10,000 miles and recurring after each repair.
What to check: Test-drive and brake firmly from highway speed to feel for steering-wheel shake, and ask for service records showing whether rotors were turned or replaced. Have the brake lines and booster inspected on a car this age, particularly near the battery.
2 excerpts from owner complaints in NHTSA records
“I bought my Cougar in 1997. At 6,113 miles the front rotors were warped and had to be turned . At 8,788 miles the roters had to be replaced. At 15,718 miles the rotors were warped again and had to be turned again. At 16,992 miles the rotors were warped again and turned once again. At 20,990 miles more problems with the brakes,premium aftermarket rotors and pads were ordered and were installed at 21,461 miles.then at 26,402 the brake problem continues the rotors were turned again. …”
NHTSA complaint #713895, filed 1999-10“While traveling 30mph in traffic started applying brakes to slow down, had no brakes, and vehicle kept going. Brake pedal was almost to the floor. Also, cruise control had failed. Stopped vehicle and had it towed to mechanic. Was informed that brake booster plunger, had worn out, causing non braking ability.”
NHTSA complaint #898840, filed 2001-11 - Transmission and drivetrain
Transmission shifting and engagement problems
- 7 complaints (9%)
- typically at 2.1 yrs old
- 1 mention a crash, fire or injury
- filed 1997–2001
Complaints describe the transmission failing to shift or not engaging when the vehicle is put in gear, so the car will not move or accelerate. Some owners report repeated transmission repairs or replacements, and vibration or erratic shifting; one owner was told by a service manager that the transmission used weak clutch packs. One complaint describes the vehicle rolling backward after being placed in park. Reported across a wide mileage range, including several cars with well over 100,000 miles; some complaints came within the first few years of ownership.
What to check: Drive the car from cold through all gears, check that it engages firmly from park to drive and reverse, and ask for any transmission service or rebuild history. Two service bulletins cover powertrain control module programming, so ask whether that was performed.
2 excerpts from owner complaints in NHTSA records
“There is a leakage within the fuel injection system. Whenever consumer put gas into the vehicle, the gas leaks out, and the consumer can smell gas in vehicle. Vehicle has been in repair shop three times for the fuel injection. Also consumer had transmission in repair shop four times. Vehicle is still in repair shop for fuel injection problems, and dealer can't determine the problem.”
NHTSA complaint #839002, filed 1999-06“While driving, transmission intermittently failed to shift. When vehicle is put into gear, the vehicle will not accelerate. The vehicle will not move anywhere. Service manger told consumer that ford used bad clutch packs and clutch pack cylinders in the 1997 transmissions.”
NHTSA complaint #819990, filed 1997-12 - Suspension
Front suspension ball joint and vibration
- 6 complaints (8%)
- median 58,970 mi at 6.4 yrs old (1 states mileage, few)
- filed 1999–2003
Owners report front-end vibration, shaking or pulling that persisted through several repair attempts, and in a few cases a lower ball joint breaking after the car hit a pothole, which stopped the vehicle and damaged the wheel and tire. Complaints describe diagnosis being difficult until the ball joint was replaced. Reported at moderate to higher mileage, in some cases after years of unresolved vibration or following a road impact.
What to check: Have a shop check the front ball joints and bushings during a pre-purchase inspection, and drive over uneven pavement to look for shake or pulling.
2 excerpts from owner complaints in NHTSA records
“Lower left ball joint broke when vehicle hit a pot hole. The vehicle stopped immediately grinding to a halt. The consumer inspected the vehicle and found the left wheel rim with extensive grinding damage and wear on the outside left front tire and the inside of the right front tire.”
NHTSA complaint #10046538, filed 2003-11“Left front lower ball joint on vehicle broke after hitting a pothole. The inside of the wheel rim showed extensive damage. The vehicle was towed and repaired. The mechanic switch the two left tires from front to back. The vehicle didn't wobble or have any vibration after the fact. The consumer had greased fittings installed on the vehicle, however the owner's manual stated no grease would be needed for 100,00 miles.”
NHTSA complaint #10038298, filed 2003-09 - Fuel system
Fuel smell and leaks from lines or tank area
Mentioned in 4 of 60 sampled complaints
Owners describe a gasoline smell in or around the vehicle and fuel leaking under the car, in some cases after refueling. One complaint describes fuel lines chafing against the top of the tank, and another describes holes worn in a fuel line where the driveshaft rubbed it. Complaints also mention repeated shop visits without a clear diagnosis. Reported from about 51,000 to 60,000 miles in the complaints that list mileage, often noticed during or after fueling.
What to check: After fueling, look and smell for leaks under the rear of the car near the tank and lines, and have the fuel lines over the tank inspected for rubbing or chafing.
2 excerpts from owner complaints in NHTSA records
“Fuel was noted leaking from fuel lines just aft of the passenger side door. Upon further investigation, fuel was seem running down the fuel lines and side of fuel tank. Leak was caused by fuel lines chaffing through on top of tank. Car had 51,000 miles on it.”
NHTSA complaint #10411712, filed 2011-07, 51,000 miles“On 7/29/2003 while fueling t gas was leaking under the vehicle. Owner looked under the vehicle and found three holes in the fuel line. Owner stated that driveshaft was rubbing on the fuel line which caused the holes.”
NHTSA complaint #10031533, filed 2003-07
Buying note. On a car of this age, the intake manifold, brakes and transmission matter more than mileage; ask for receipts showing manifold replacement, brake rotor work and any transmission service, and budget for a thorough cooling-system and front-suspension inspection before purchase.
Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.
NHTSA recorded 76 consumer complaints for the 1997 Mercury Cougar. 26 of the complaints include a mileage, and 23% of those were filed for vehicles with under 50,000 miles; the median is 71,550 miles. Of all complaints, 2 involved a crash, 2 a fire, 2 an injury, according to the filers. NHTSA lists 0 recall campaigns and 5 technical service bulletins for this model year.
Not compared (before 2008). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Engine cooling30 39%
- Brakes12 16%
- Fuel system8 11%
- Suspension6 7.9%
- Electrical system4 5.3%
- Tires4 5.3%
- Other or unknown3 4.0%
- Seat belts3 4.0%
Also reported: Equipment (2), Steering (2), Body and structure (2), Vehicle speed control (2), Air bags (1), Engine (1), Exterior lighting (1), Latches, locks and linkages (1), Seats (1), Wheels (1).
Example complaints
Engine cooling: “I understand there was a class action suit due to a faulty intake manifold on many ford cars with a 4.6 liter engine. I or my kids have owned a 1997 Mercury Cougar since new. Recently this car which had been in storage for several years was given to my son who is laid off and attempting to complete his bachelors degree. I spent money to repair sensor, freezeplug and he put new tires on this car. …”
NHTSA complaint #10303349, filed 2010-01, 70,000 milesBrakes: “Front hydraulic disc rotors are 1/2 inch bigger that rear rotors which causes rotors to warp. Brakes overheat, steering starts shaking, and front end will nose dive if vehicle brakes too hard, causing wheels to lock up. Dealer notified. Please provide more information.”
NHTSA complaint #8012308, filed 2002-06Transmission and drivetrain: “My vehicles became totally disabled on a very busy highway with heavy after hours rush hour traffic. The manifold which is made of plastic broke were the coolant temperature sensor was built in, I also noticed that a few sparkplugs were flooded with coolant. I found out that there was a lawsuit on these vehicles but no one knew about it and only fleet vehicles were covered and not civilian vehicles. I wonder if there is any chance for me to seek a dealership and get reimbursed for these damages.”
NHTSA complaint #10521303, filed 2013-06, 156,000 milesFuel system: “Intake manifold 1997 Cougar, engine failure. The consumer stated that she had to pay 900.00 to replace a plastic part in the intake manifold and wants the part to be recalled.”
NHTSA complaint #10095192, filed 2004-09Mileage when problems were reported
23% of the 26 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 51,000 and 88,075 miles.
Complaints by year filed
Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 1997 Mercury Cougar. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.
| Version | Overall | Frontal | Side | Side pole | Rollover |
|---|---|---|---|---|---|
| Cougar · coupe | not rated | 5 / 5 | — | — | — |
Ratings before the 2011 model year come from an older, less demanding test and are not comparable with ratings for 2011 and later.
Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.
Fuel economy and running cost
EPA ratings for each 1997 Mercury Cougar version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| Cougar RWD | 3.8L 6-cyl | 4-speed automatic | 16 | 24 | 19 | $3,550 |
| Cougar RWD | 4.6L 8-cyl | 4-speed automatic | 15 | 23 | 18 | $3,700 |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
NHTSA lists no recall campaigns for the 1997 Mercury Cougar in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 5 on record; the latest 5 are shown.
- 10023943Oct 1, 2007Engine cooling. Some 1997-2008 vehicles equipped with a 4.6l 2v, 5.4l 2v, or 6.8l 2v engine--spark plug thread repair procedure--not covered under new vehicle limited warranty. *nj this includes f-53 motorhome…
- 10018959Dec 14, 2005Engine cooling. Extended coverage program 05n04 - extended coverage for composite intake manifold. This program is being provided as a settlement to a class action lawsuit. The terms of the settlement extend the…
- 10014086Dec 13, 2004Transmission and drivetrain. General (pcm) power train control module programming procedures.
- 10013369Nov 1, 2004Transmission and drivetrain. General power train control module (pcm) programming procedures.
- 10013060Oct 14, 2002Equipment. Climate control a/c service tech tips.
Other model years of the Mercury Cougar
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2002 | 95 | 66,600 | 1 | — | 21 | Not compared (before 2008) | Falling |
| 2001 | 82 | 69,900 | 1 | — | 21 | Not compared (before 2008) | Falling |
| 2000 | 211 | 65,000 | 3 | — | 21 | Not compared (before 2008) | Stable |
| 1999 | 454 | 68,217 | 7 | — | 23 | Not compared (before 2008) | Stable |
| 1997 | 76 | 71,550 | 0 | — | 19 | Not compared (before 2008) | Stable |
| 1996 | 62 | 80,000 | 2 | — | 19 | Not compared (before 2008) | Stable |
| 1995 | 109 | 60,000 | 0 | — | 19 | Not compared (before 2008) | Falling |
| 1994 | 137 | 75,000 | 0 | — | 19 | Not compared (before 2008) | Stable |
| 1993 | 195 | 114,664 | 3 | — | 19 | Not compared (before 2008) | Stable |
| 1992 | 92 | 95,000 | 3 | — | 20 | Not compared (before 2008) | Stable |
| 1991 | 73 | 95,000 | 3 | — | 20 | Not compared (before 2008) | Stable |
| 1990 | 86 | 75,400 | 3 | — | 18 | Not compared (before 2008) | Stable |
| 1989 | 81 | 116,828 | 4 | — | 18 | Not compared (before 2008) | Stable |
| 1988 | 55 | 67,500 | 1 | — | 21 | Not compared (before 2008) | Stable |
| 1987 | 33 | — | 1 | — | 19 | Not compared (before 2008) | Rising |
| 1986 | 13 | 100,000 | 2 | — | 19 | — | Not enough data |
| 1985 | 10 | — | 1 | — | 18 | — | Not enough data |
| 1984 | 17 | 41,000 | 1 | — | 18 | — | Stable |
All Mercury Cougar model years · Best and worst years by complaints
Frequently asked questions
What are the most common problems with the 1997 Mercury Cougar?
Complaints for this model year center on the engine cooling system: owners repeatedly describe a cracked plastic intake manifold that lets coolant escape, producing a low-coolant light, steam, overheating and sometimes a stalled engine. The issues reported most often: Cracked plastic intake manifold / coolant loss; Warped front brake rotors / brake pulsation; Transmission shifting and engagement problems.
How many NHTSA complaints does the 1997 Mercury Cougar have?
NHTSA recorded 76 consumer complaints for the 1997 Mercury Cougar as of Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 1997 Mercury Cougar is reported most often?
Engine cooling is named most often, in 30 complaints (39% of the total), followed by brakes with 12.
Has the 1997 Mercury Cougar been recalled?
NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 1997 Mercury Cougar get?
The EPA rates the 1997 Mercury Cougar (Cougar, 3.8L 6-cyl) at 19 mpg combined, 16 city and 24 highway, with an estimated annual fuel cost of $3,550 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 1997 Mercury Cougar reported?
Among the 26 complaints that include a mileage, the median is 71,550 miles and the middle half falls between 51,000 and 88,075 miles; 23% were filed for vehicles with under 50,000 miles.
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. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.