ToyotaMR22003Overview/toyota/mr2/2003/base/

2003 Toyota MR2

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 MR2.

Body PASSENGER CARTransmission Manual 5-spd

The 2003 Toyota MR2 is a passenger‑car sports coupe that uses a 3.9‑qt engine oil capacity with a 5W‑30 API specification, paired with a manual five‑speed transmission and rated at 23/29/25 mpg (city/highway/combined) by the EPA. Ownership data show 31 total complaints for the model year, with the power train being the most frequent issue area, while no recalls were issued for 2003. Within the 1991‑2005 complaint history—where the highest total was 32 complaints in 2002 and the lowest was a single complaint in 1992—the 2003 figure of 31 complaints places it just below the peak, reflecting a reliability level that remains low overall. This positions the 2003 MR2 as a consistently dependable example of the model’s long‑term trend.

Model year200520042003200120001995199419931992

Quick specs

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

Engine oil capacity3.9 qtOEM · verified
Engine oil type5W-30 APIOEM · verified
Lug nut torque76 ft-lbsOEM · verified
EPA fuel economy23/29/25 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 51R · 430 CCA battery, OE oil filter 90915YZZN1. 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 51R · 430 CCAOEM · verified
Tire size215-45WR16OEM · verified
Wheel / rim7-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter90915YZZN1
Engine air filter178011602083
Fuel filter2330023040 alt 2321721030
Spark plug9008091184
Front wiper blades8522252131 alt 8521253051
Serpentine belt99366J1690
Thermostat9091603125 alt 1632562010

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionManual 5-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined23 / 29 / 25 mpg
DrivetrainRear-Wheel Drive
Recommended fuelRegular Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the MR2 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

6.6–8.2 sec0–60 mph (tested)quickest 6.60 sec — 2001 Spyder
YearTrim / engine0–60¼ mileHPDrivetrain
2002Spyder 1.8L I-48.20 sec16.20 sec138 hpRWD
2001Spyder 1.8L I-46.60 sec15.20 sec138 hpRWD
2001Spyder 1.8L I-47.10 sec15.30 sec138 hpRWD
2001Spyder 1.8L I-47.16 sec15.40 sec138 hpRWD
2000Spyder 1.8L I-47.10 sec15.50 sec138 hpRWD

Service quick specs OEM factory data

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

This engine holds 3.9 qt of 5W-30 API engine oil. Torque lug nuts to 76 ft-lbs, the oil drain plug to 18.0 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Engine Oil5W-30 · API
Engine Oil Capacity3.9 qt

Engine torques

Crankshaft Pulley and/or Damper Bolts89 ft-lbs
Engine Oil Pan Drain Plug18.0 ft-lbs

Chassis torques

Lug Nuts76 ft-lbs
Rear Wheel Hub159 ft-lbs
Front Wheel Hub159 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Curb Idle Speed (No Load)800 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug ManufacturerDenso
Spark Plug Gap0.039-0.043 in
Spark Plug Torque13.0 ft-lbs
Ignition Timing8-12, Not adjustable degrees

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.25-1.38 lbs
Oil GroupPAG
Oil Type46
Oil Capacity4.50 oz
Standard BCI Group Number51R
Standard BCI Cranking Performance430 cca

Service checks

Injector Primary Resistance13.4-14.2 @ 68 degreesF ohms
Injector Primary Resistance12-16 na ohms
Engine Compression145-215 psi
Engine Oil Pressure43 psi @ Idle, 36-78 psi @ 3000 rpm psi
Intake Valve Lash0.006-0.010 in
Exhaust Valve Lash0.010-0.014 in

Brakes

Torque Caliper to Bracket80 ft-lbs / 15 ft-lbs
Torque to Knuckle76 ft-lbs / 44 ft-lbs
Minimum Pad ThicknessFront: 0.039; Rear: 0.039 in
Minimum Shoe Thickness0.039 in
Rotor Runout Limit0.002 in / 0.0039 in
Rotor Nominal Thickness From0.787 in / 0.63 in
Rotor Nominal Thickness To0.787 in / 0.63 in
Rotor Discard at or Under0.709 in / 0.591 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 7,500 mi; spark plugs at 120,000 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 miEngine Oil (drain & refill) · Engine Oil Filter (replace)
Every 15,000 miAccessory Drive Belt (inspect) · Brake Line (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Exhaust System (Complete) (inspect) · Steering Gear Box Assembly (inspect)
Every 30,000 miAir Conditioning Condenser (inspect) · Differential (inspect fluid level) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect)
At 60,000 miAccessory Drive Belt (inspect)
Every 60,000 miEngine Valves (inspect valve lash)
At 120,000 miSpark Plugs (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 Toyota MR2 recorded 31 federal complaints, 0 recalls, and 99 total service bulletins, placing it at the peak of complaint activity in the model’s recent history. Complaint counts were 32 in 2002 and fell sharply to 2 in 2004, indicating a brief but notable surge that includes the target year. The dominant complaint categories were Power Train (7), Vehicle Speed Control (3), Engine & Engine Cooling (3), and Electrical System (2), with 5 crash‑related and 1 fire‑related complaints reported. Compared with the surrounding years, 2003 sits at the high‑end of the complaint arc while maintaining the same zero‑recall pattern observed across the generation. Consequently, prospective buyers should weigh the elevated complaint level against the overall reliability record and may prefer a later model or a comprehensive pre‑purchase inspection.

0
Open recalls
NHTSA campaigns
99
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
31
Owner complaints
5 involved a crash · 1 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 31 complaints on record, top 8 components.

Power Train7
Vehicle Speed Control3
Engine & Engine Cooling3
Electrical System2
Structure2
Wheels,Service Brakes,Engine1
Vehicle Speed Control,Service Brakes,Engine1
Power Train,Electrical System1

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 99 bulletins on record with NHTSA.

BulletinDateComponentSummary
T-SB-0035-24 Rev22024-12-06StructureAcid rain results from rainwater or other airborne moisture that become acidic due to…
T-SB-0038-24 Rev22024-12-06StructureTo prevent brake rotor rust from forming during transportation and storage, wheel film…
T-SB-0039-24 Rev22024-12-06StructureThe condition known as acid rain is caused by airborne chemicals or particles in the…
T-SB-0061-23 Rev22024-12-05StructureToyota vehicles are currently protected with RapgardTM protective film designed to…
T-SB-0062-23 Rev22024-12-03StructureVehicles may occasionally be subjected to contamination by airborne iron particles shed…

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 MR2. 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 MR2 take?

3.9 qt of 5W-30 API, per the factory manual.

Does the 2003 MR2 have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the MR2 get?

EPA figures are 23 city / 29 highway / 25 combined mpg.