MitsubishiEclipse20032.4L/mitsubishi/eclipse/2003/2-4l/

2003 Mitsubishi Eclipse — 2.4L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 Eclipse 2.4L.

Body PASSENGER CAREngine 2.4LTransmission Automatic (S4)

The 2003 Mitsubishi Eclipse 2.4L is a passenger car equipped with a 2.4-liter engine and a four-speed automatic transmission, achieving an EPA-estimated 19 mpg city and 25 mpg highway while using 4.5 quarts of 10W-30 or 5W-30 API oil. Within the Eclipse’s complaint history from 1990 to 2012, this model year’s 166 owner complaints place it well below the 1995 peak of 392, signaling a more reliable vintage, though structure-related issues and five recalls remain notable.

Model year201220112010200920082007200620052003

Quick specs

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

Engine oil capacity4.5 qtOEM · verified
Engine oil type10W-30 / 5W-30 APIOEM · verified
Lug nut torque65-80 ft-lbsOEM · verified
EPA fuel economy19/25/21 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 86 · 525 CCA battery, OE oil filter MZ690072. 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 86 · 525 CCAOEM · verified
Tire sizeP205-55R16OEM · verified
Wheel / rim6-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filterMZ690072 alt MZ690116
Engine air filterMB906051
Fuel filterMR993092
Spark plugMS851357 alt MS851728
Front wiper blades8250A174 alt 8250A536
Serpentine beltMN187017 alt MN187016
ThermostatMD328070 alt MD350415
Cabin air filterMR500360

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S4)

Dimensions & weight NHTSA vPIC

Overall length176.8 in
Overall width68.9 in
Overall height51.6 in
Wheelbase100.8 in
Curb weight3142 lb
Track (front / rear)59.1 / 58.3 in
Weight distribution (front / rear)63/37

Ratings & economy EPA / vPIC

EPA city / highway / combined19 / 25 / 21 mpg
DrivetrainFront-Wheel Drive
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine holds 4.5 qt of 10W-30 / 5W-30 API engine oil, 85W-90 · 80W-90 · GL-5 in the differential, DOT 3 · DOT 4 brake fluid. Torque lug nuts to 65-80 ft-lbs, the oil drain plug to 18.0-22.0 ft-lbs. The firing order is 1-2-3-4-5-6. 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

Brake FluidDOT 3 · DOT 4
Differential Gear Oil85W-90 · 80W-90 · GL-5
Differential Gear Oil Capacity1.3 Pints
Engine CoolantETHYLENE GLYCOL
Engine Oil10W-30 · API · 5W-30
Engine Oil Capacity4.5 qt
Power Steering FluidGenuine Mitsubishi PS fluid
Power Steering FluidUse Mitsubishi PS fluid

Engine torques

Camshaft Bearing/Carrier Cap Bolts or StudsDOHC: 14 ft-lbs; SOHC:
Crankshaft Pulley and/or Damper Bolts18 ft-lbs
Engine Flywheel Bolts98 ft-lbs
Intake Manifold to Engine Bolts14 ft-lbs
Exhaust Manifold to Cylinder Head BoltsM8 fastners: 36 ft-lbs
Main Bearings57 ft-lbs
Engine Oil Pan Drain Plug18.0-22.0 ft-lbs

Chassis torques

Lug Nuts65-80 ft-lbs
Front Wheel Hub167 ft-lbs
Rear Wheel Hub166 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Cylinder Firing Order1-2-3-4-5-6
Curb Idle Speed (No Load)700 rpm
Curb Idle Speed Variance (No Load)100 rpm
Ignition Coil Secondary Resistance8500-11,500 ohms
Spark Plug Gap0.028-0.035 in
Spark Plug Torque13.0 ft-lbs
Ignition Timing5, Not adjustable degrees

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.00-2.00 lbs
Oil GroupPAG
Standard BCI Group Number86
Standard BCI Cranking Performance525 cca

Service checks

Regulated Fuel System Pressure (Without Vacuum)47.0-50.0 psi
Regulated Fuel System Pressure (With Vacuum)38.0 psi
Engine Compression185-139 PSI. 14 Maximum variation PSI.
Engine Compression139-185 psi
Engine Oil Pressure4.2 psi @ Idle, 43-100 psi @ 3500 rpm psi
Intake Valve LashHydraulic in
Exhaust Valve LashHydraulic in

Brakes

Brake ApplicationWITH REAR DISC
Torque Caliper to Bracket32 ft-lbs
Torque to Knuckle44 ft-lbs
Torque Caliper to Bracket74 ft-lbs
Torque to Knuckle87-101 ft-lbs
Torque Caliper to Bracket28 ft-lbs
Torque to Knuckle74 ft-lbs
Minimum Pad ThicknessFront: 0.080; Rear: 0.080 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
115 ft. lbs., Step 2: 90-9415 ft. lbs
Cylinder Head — tightening sequence 5 stages
158 ft. lbs.58 ft. lbs
2Loosen all bolts completely.
315 ft. lbs.15 ft. lbs
490 degrees.90 degrees
590 degrees.90 degrees

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 60,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 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 miBrake Hydraulic System (inspect fluid level) · Cabin Air Filter (replace) · Engine Oil (drain & refill) · Power Steering System (inspect) · Tire & Wheel Assembly (rotate)
Every 15,000 miAxle Shaft Oil Seal (inspect) · Brake Line (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Engine Oil Filter (replace)
Every 30,000 miAccessory Drive Belt (inspect) · Brake Drum Assembly (inspect) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Exhaust System (Complete) (inspect) · Fuel Line (inspect)
At 60,000 miEngine Coolant System (drain, flush & refill)
Every 60,000 miDistributor Cap (inspect) · Distributor Rotor (inspect) · Fuel Evaporative Emission Control System (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect) · Spark Plug Wires (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 2003 Mitsubishi Eclipse sits near the tail end of a turbulent period that peaked during 2000–2001, when complaints reached 314 and 316 respectively, investigations were active at 2–3 per year, and TSBs climbed to 140–167. By 2002, the complaint count had dropped sharply to 104 with zero investigations, and 2003 shows 166 complaints alongside 5 recalls and 115 TSBs—a notable volume indicating that while the worst of the federal scrutiny had passed, the vehicle still generated significant service and defect reports. The 22 crash-related complaints and 7 fire complaints for 2003 are figures that warrant attention within this dataset. Comparing to the subsequent years, 2004 drops to just 14 complaints, suggesting the 2003 model year was among the last to feel the aftereffects of whatever quality or design issues drove the earlier spike. The top complaint categories—structure at 33, powertrain at 19, and air bags at 11—indicate no single overwhelming defect but rather diffuse concerns across critical systems. The 2003 Eclipse therefore appears to be a transitional model within this generation's reliability arc, benefititing from some resolution of the 1995–2001 issues but still carrying elevated complaint and TSB activity relative to the cleaner 2004–2005 period. A buyer should weigh the lower purchase price against the higher likelihood of encountering age-related structural or powertrain issues compared to the later, more refined model years.

5
Open recalls
NHTSA campaigns
115
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
166
Owner complaints
22 involved a crash · 7 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 166 complaints on record, top 8 components.

Structure33
Power Train19
Air Bags11
Tires11
Unknown Or Other9
Engine & Engine Cooling8
Visibility8
Electrical System7

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 5 campaigns on record for this vehicle.

03V442000Fuel System, Gasoline:Delivery:Fuel PumpReported 04/11/2003

ON CERTAIN PASSENGER VEHICLES, THE FUEL RETURN LINE HOSE FITTING ON THE ELECTRIC FUEL PUMP MAY BE RESTRICTED, CAUSING EXCESSIVE FUEL PRESSURE TO BUILD UP IN THE FUEL INJECTION SYSTEM. EXCESSIVE FUEL PRESSURE MAY RESULT… Remedy: DEALERS WILL INSPECT THE FUEL PUMP PRESSURE. THOSE VEHICLES EXHIBITING HIGHER THAN NORMAL FUEL PUMP PRESSURE WILL RECEIVE FUEL PUMP MODIFICATIONS. THE RECALL BEGAN DECEMBER 3…

04V428000Equipment:Other:LabelsReported 01/09/2004

CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE… Remedy: MITSUBISHI CARIBBEAN WILL MAIL A CUSTOMER NOTIFICATION LETTER CONTAINING A WRITTEN DESCRIPTION AND A GRAPHIC OF THE BI-LINGUAL DASHBOARD AIR BAG WARNING LABEL. IN ADDITION, ALL…

Technical service bulletins NHTSA · verified

Showing 5 of 115 bulletins on record with NHTSA.

BulletinDateComponentSummary
DEALER LETTER2023-07-21EquipmentThis is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has…
TSB-23-00-0042023-04-24StructureThis Technical Service Bulletin provides instructions and material safety data sheets for…
TSB-23-00-0012023-04-24EquipmentThis Technical Service Bulletin reviews the regulations that require a label showing the…
DEALER LETTER2023-04-21EquipmentThis is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has…
TSB-22-54-0032022-04-07Exterior LightingThis Technical Service Bulletin was sent to dealers to explain the difference between…

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 Eclipse. 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.

Reference guides

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

Frequently asked

How much oil does the 2003 Eclipse 2.4L take?

4.5 qt of ABOVE 0 degreesF 10W-30 SL API, BELOW 100 degreesF 5W-30 SL API, per the factory manual.

Does the 2003 Eclipse have open recalls?

NHTSA lists 5 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 2.4L get?

EPA figures are 19 city / 25 highway / 21 combined mpg.