MitsubishiLancer20031.6L/mitsubishi/lancer/2003/1-6l/

2003 Mitsubishi Lancer — 1.6L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 Lancer 1.6L.

Body PASSENGER CAREngine 1.6LTransmission Automatic 4-spd

The 2003 Mitsubishi Lancer is a passenger car powered by a 1.6L engine and a 4-speed automatic transmission, delivering an EPA fuel economy rating of 21/27/23 mpg. Within the model's production history from 1996 to 2017, the 2003 model year stands as the least reliable, recording a peak of 311 owner complaints. This volume of reports, which primarily target the power train and include seven recalls, represents the most problematic year for the vehicle compared to the single complaint recorded for 1996.

Model year20032002

Quick specs

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

Lug nut torque65-80 ft-lbsOEM · verified
EPA fuel economy21/27/23 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 35 · 520 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 35 · 520 CCAOEM · verified
Tail / brake / turnTAILOEM · verified
Tire size4WD:P225-75R15OEM · verified
Wheel / rim6-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filterMZ690072
Engine air filterMR552951
Fuel filterMR552781 alt MR571545
Spark plugMS851357 alt MS851728
Front wiper bladesMZ693015 alt 8250A536
Serpentine beltMD373620 alt MD373622
ThermostatMD337408 alt MN143463

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length177.6 in
Overall width66.9 in
Overall height53.9 in
Wheelbase102.4 in
Curb weight2646 lb
Track (front / rear)57.9 / 57.5 in
Weight distribution (front / rear)62/38

Ratings & economy EPA / vPIC

EPA city / highway / combined21 / 27 / 23 mpg
DrivetrainFront-Wheel Drive
Passenger volume94 cu ft
Cargo volume11 cu ft
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine DOT 3 · DOT 4 brake fluid. Torque lug nuts to 65-80 ft-lbs, the oil drain plug to 29.0 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Brake FluidDOT 3 · DOT 4
Differential Gear Oil Capacity1.3 Pints
Engine CoolantETHYLENE GLYCOL
Power Steering FluidGenuine Mitsubishi PS fluid

Engine torques

Engine Oil Pan Drain Plug29.0 ft-lbs

Chassis torques

Lug Nuts65-80 ft-lbs
Transfer Case Fill Plug23.0-25.0 ft-lbs
Transfer Case Drain Plug23.0-25.0 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Spark Plug Torque13.0 ft-lbs
Ignition Timing5, Not adjustable degrees
Ignition Timing Acceptable Variance3 degrees
Ignition Timing Reference RPMIdle rpm

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.06-1.15 lbs
Oil GroupPAG
Oil Type56
Oil Capacity4.70 oz
Standard BCI Group Number35
Standard BCI Cranking Performance520 cca

Service checks

Engine Compression170-234 psi
Engine Compression139-185 psi
Engine Oil Pressure4.3 psi @ Idle, 43-100 psi @ 3500 rpm psi
Intake Valve LashHydraulic in
Exhaust Valve LashHydraulic in

Brakes

Torque Caliper to Bracket65 ft-lbs
Torque to Knuckle66-80 ft-lbs
Torque Caliper to Bracket89-111 ft-lbs
Torque to Knuckle66-80 ft-lbs / 52-65 ft-lbs
Minimum Pad ThicknessFront: 0.080; Rear: 0.080 in
Minimum Shoe Thickness0.039 in
Rotor Runout Limit0.0024 in
Rotor Nominal Thickness From0.945 in

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 5,000 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 5,000 miEngine Oil (drain & refill) · Engine Oil Filter (replace)
Every 7,500 miBrake Hydraulic System (inspect fluid level) · Power Steering System (inspect)
Every 15,000 miBrake Line (inspect) · Brake Linings (inspect)
Every 30,000 miAccessory Drive Belt (inspect) · Brake Drum Assembly (inspect) · Drive Belt (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 Lancer marks a pronounced peak in complaints within this generation, with 311 complaints—more than double the 155 recorded in 2002 and the highest count in the entire dataset. This spike coincides with 7 recalls, the generation's first NHTSA investigation, and Power Train issues dominating the complaint categories at 112 instances, followed by Visibility concerns at 61. By 2004, complaints dropped sharply to 80, with the same recall count, suggesting manufacturers addressed the underlying issues. The 2003 model year therefore represents the apex of reliability concerns for this generation, sitting at the center of the complaint spike rather than before it. Given the elevated complaint volume, the presence of an investigation, and the concentration of drivetrain issues, the 2003 Lancer carries more risk than later model years in this trend.

7
Open recalls
NHTSA campaigns
96
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
311
Owner complaints
16 involved a crash · 1 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 311 complaints on record, top 8 components.

Power Train112
Visibility61
Structure14
Engine & Engine Cooling13
Unknown Or Other11
Suspension8
Electrical System8
Air Bags8

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 6 campaigns on record for this vehicle.

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…

16V458000Suspension:Front:Control Arm:Lower ArmReported 23/06/2016

Mitsubishi Motors North America, Inc. (MMNA) is recalling certain model year 2002-2007 Lancer, 2004 Lancer Wagon, 2003-2006 Lancer Evolution, 2003-2006 Outlander and 2007-2013 Outlander V-6 vehicles originally sold in… Remedy: MMNA will notify owners, and dealers will inspect the front cross members. Depending on the level of existing corrosion, either a sealing/anti-corrosion agent will be applied or…

Technical service bulletins NHTSA · verified

Showing 5 of 96 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 Lancer. 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

Does the 2003 Lancer have open recalls?

NHTSA lists 7 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 1.6L get?

EPA figures are 21 city / 27 highway / 23 combined mpg.