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2010 Mercury Mariner Hybrid

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2010 Mariner Hybrid.

Body SUV

Operating as an SUV within the 2006-2012 model history, the 2010 Mercury Mariner Hybrid requires 5.0 qt of 5W-20 API engine oil. This model year stands at the high end of the vehicle's reliability record with 278 total owner complaints and 3 recalls, with steering identified as the top complaint area. Marking the peak of reported issues compared to the 1 complaint logged for the 2012 model, the 2010 Mariner Hybrid represents a critical point of scrutiny for researchers assessing the model's reliability history.

Model year2011 2010 2009 2008 2007 2006

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity5.0 qtOEM · verified

Engine oil type5W-20 APIOEM · verified

Lug nut torque100 ft-lbsOEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 96R · 500 CCA battery. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 96R · 500 CCAOEM · verified

Tire sizeP235-70R16OEM · verified

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 5.0 qt of 5W-20 API engine oil, DOT 3 brake fluid. Torque lug nuts to 100 ft-lbs, the oil drain plug to 18.0 ft-lbs. The firing order is 1-4-2-5-3-6. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Automatic Transmission Fluid	Ford Mercon LV
Automatic Transmission Fluid Capacity	9
Brake Fluid	DOT 3
Engine Coolant	USE FORD PREMIUM GOLD COOLANT
Engine Oil	5W-20 · API
Engine Oil Capacity	5.0 qt
Engine Oil	5W-20 · API
Engine Oil Capacity	6.0 qt

Engine torques

Camshaft Bearing/Carrier Cap Bolts or Studs	7 ft-lbs
Engine Flywheel Bolts	59 ft-lbs
Intake Manifold to Engine Bolts	13.3 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	35 ft-lbs
Intake Manifold to Engine Bolts	7.4 ft-lbs
Engine Oil Pan Drain Plug	18.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs	7 ft-lbs

Chassis torques

Lug Nuts	100 ft-lbs
Transfer Case Fill Plug	25.0 ft-lbs
Front Wheel Hub	222 ft-lbs
Rear Wheel Hub	221 ft-lbs

Ignition

Cylinder Firing Order	1-3-4-2
Cylinder Firing Order	1-4-2-5-3-6
Spark Plug Manufacturer	Motorcraft

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	1.57 lbs
Oil Group	PAG
Oil Type	46
Oil Capacity	5.00 oz
Refrigerant	R134a
Refrigerant Capacity	2.00-2.56 lbs
Standard BCI Group Number	96R

Service checks

Pressure Test	21 psi
Radiator Cap Pressure Relief	17-21 psi
Thermostat Opening Temperature	194 °F
Pressure Test	21 psi
Radiator Cap Pressure Relief	17-21 psi
Thermostat Opening Temperature	183-190 °F
Key ON Engine OFF (KOEO)	55
Key ON Engine OFF (KOEO)	55

Brakes

Torque to Knuckle	129 ft-lbs
Torque Caliper to Bracket	18 ft-lbs
Minimum Pad Thickness	Front: 0.118; Rear: 0.039 in
Rotor Runout Limit	0.002 in
Rotor Discard at or Under	0.944 in
Drum Discard at-or-over	10.09

Multi-step torque procedures OEM · verified

Camshaft Bearing/Carrier Cap Bolts or Studs — tightening sequence 1 stages

Tighten all bolts finger tight., Step 2

5 ft. lbs

Connecting Rod (Large End) Bearings — tightening sequence 1 stages

21 ft. lbs., Step 2: 90

21 ft. lbs

Connecting Rod (Large End) Bearings — tightening sequence 1 stages

17 ft. lbs., Step 2: 32

17 ft. lbs

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

89 ft. lbs., step 2: 360 degrees, step 4: 37 ft. lbs., step 5: 90

89 ft. lbs

Cylinder Head — tightening sequence 5 stages

1	Tighten in sequence shown 3.7 ft. lbs.	3.7 ft. lbs
2	Tighten in sequence shown 11 ft. lbs.	11 ft. lbs
3	Tighten in sequence shown 33 ft. lbs.	33 ft. lbs
4	90 degrees	90 degrees
5	90 degrees; Do not re-use old bolts.	90 degrees

Cylinder Head — tightening sequence 5 stages

1	Tighten in sequence shown 3.7 ft. lbs.	3.7 ft. lbs
2	Tighten in sequence shown 11 ft. lbs.	11 ft. lbs
3	Tighten in sequence shown 33 ft. lbs.	33 ft. lbs
4	90 degrees	90 degrees
5	90 degrees; Do not re-use old bolts.	90 degrees

Cylinder Head — tightening sequence 6 stages

1	30 ft. lbs.	30 ft. lbs
2	90 degrees	90 degrees
3	loosen one full turn
4	30 ft. lbs.	30 ft. lbs
5	90 degrees	90 degrees
6	90 degrees; Do not re-use old bolts.	90 degrees

Engine Flywheel Bolts — tightening sequence 1 stages

37 ft. lbs., Step 2: 59 ft. lbs., Step 3: 83

37 ft. lbs

Exhaust Manifold to Cylinder Head Bolts — tightening sequence 1 stages

Install 6 new exhaust manifold stud

9 ft. lbs

Main Bearings — tightening sequence 1 stages

4 ft. lbs., Step 2: 18 ft. lbs., Step 3: 90

4 ft. lbs

Oil Pump to Cylinder BLock Bolts/Studs — tightening sequence 1 stages

7 ft. lbs., Step 2: 15

7 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 90,000 mi; coolant every 45,000 mi. The big-interval services (every 45,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 7,500 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (inspect)
Every 15,000 mi	Brake System (inspect) · CV Joint Boot (inspect) · Cabin Air Filter (replace) · Driveshaft (inspect) · Driveshaft U-Joint (inspect) · Engine Coolant System (inspect fluid level)
Every 30,000 mi	Accessory Drive Belt (inspect) · Engine Air Filter Element (replace) · Temperature Controlled Seat Air Filter (replace)
Every 45,000 mi	Engine Coolant System (drain, flush & refill)
At 90,000 mi	Accessory Drive Belt (inspect)
Every 90,000 mi	Spark Plugs (replace)
At 105,000 mi	Drive Axle Assembly (drain & refill) · Engine Coolant System (drain, flush & refill)
At 150,000 mi	Drive Belt (replace) · Transfer Case Assembly (drain & refill) · Wheel Bearing (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2010 Mercury Mariner Hybrid marks a pronounced spike in federal-reported issues within its generation, with complaints surging to 278—more than double the previous peak in 2008 and a twelve-fold increase over 2009. This year also introduces the first recalls (three) and the highest number of investigations (four) and TSBs (35) across the model’s lifespan, signaling systemic concerns rather than isolated defects. The trend suggests a late-generation escalation in quality control or design flaws, with the 2010 model falling at the apex of this arc, particularly in steering (52 complaints) and powertrain (31). While subsequent years show a dramatic decline in complaints (just one in 2012), this likely reflects waning production volume rather than resolved issues. The data doesn’t specify root causes, but the concentration of recalls and TSBs in 2010 implies heightened risk of unresolved or recurring problems. **Takeaway:** Given the disproportionate volume of complaints, recalls, and investigations, the 2010 Mariner Hybrid is a high-risk purchase unless thorough service records and pre-purchase inspections confirm all recalls and TSBs have been addressed.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

278

Owner complaints

3 involved a crash · 2 a fire

NHTSA crash-test rating federal NCAP · out of 5 stars

Rollover★★★★★

Owner complaints by model year NHTSA · this generation & adjacent

’06 ’07 ’08 ’09’10’12

Owner complaints filed with NHTSA, by component

All 278 complaints on record, top 8 components.

Steering52

Power Train31

Fuel/Propulsion System23

Vehicle Speed Control17

Engine14

Vehicle Speed Control,Engine14

Vehicle Speed Control,Fuel/Propulsion System12

Electrical System9

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 35 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
DOR-M9J4S-07	2020-06-03	Engine And Engine Cooling	These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication…
DOR-M3J3F-07	2020-06-03	Engine And Engine Cooling	These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication…
SSM 48130	2019-08-09	Visibility	Some 2010-2020 vehicles may exhibit distorted glass with a subtle orange peel pattern or…
SSM 47976	2019-05-10	Power Train	On vehicles equipped with an automatic transmission it is imperative that the converter…
SSM 47201	2018-03-30	Equipment	Replacing the original equipment SYNC/Navigation system with either an aftermarket…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420

Catalyst system efficiency below threshold — Bank 1

P0300

Random / multiple cylinder misfire detected

P0171

System too lean — Bank 1

P0455

Evaporative emission system leak detected — large leak

P0128

Coolant thermostat below regulating temperature

P0442

Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific Mariner Hybrid. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Group 96R battery Vehicles taking 5.0 qt

Reference guides

Cross-vehicle references for the kinds of data on this page.

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

How much oil does the 2010 Mariner Hybrid take?

5.0 qt of 5W-20 API MEETING FORD SPECIFICATION WSS-M2C945-A, per the factory manual.

Does the 2010 Mariner Hybrid have open recalls?

NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.