HondaAccord2003Overview/honda/accord/2003/base/

2003 Honda Accord

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

Body PASSENGER CAR

Classified as a passenger car requiring 4.4 quarts of 5W-20 API engine oil, the 2003 Honda Accord presents a specific mechanical baseline that belies its statistically significant ownership record. This model year anchors the very top of the Accord's complaint history spanning 1990 to 2022, logging a peak of 2,013 owner complaints—driven primarily by power train issues—alongside 24 recalls. Consequently, when contrasted with the lowest complaint year of 2022 at just 213 complaints, the 2003 iteration sits as a stark outlier in the model's lineage, meaning researchers must approach this year as a uniquely troubled chapter in the vehicle's reliability timeline.

Model year202420232022202120202019201820172003

Quick specs

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

Engine oil capacity4.4 qtOEM · verified
Engine oil type5W-20 APIOEM · verified
Lug nut torque80 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 51R · 435 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 51R · 435 CCAOEM · verified
Tire sizeP195-65R15OEM · verified
Wheel / rimN/A inOEM · verified

Full specifications

Engine, drivetrain, dimensions and economy.

Dimensions & weight NHTSA vPIC

Overall length187.8 in
Overall width71.3 in
Overall height55.9 in
Wheelbase105.1 in
Curb weight3289 lb
Track (front / rear)61.4 / 61 in
Weight distribution (front / rear)61/39

Performance & power Independent road tests

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

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

6.2–8.0 sec0–60 mph (tested)quickest 6.22 sec — 2003 EX V-6 Coupe
YearTrim / engine0–60¼ mileHPDrivetrain
2003EX V-6 Coupe 3.0L V66.22 sec14.54 sec240 hpFWD
2003EX V-6 Sedan 3.0L V67.00 sec15.50 sec240 hpFWD
2003EX V-6 Sedan 3.0L V67.30 sec15.70 sec240 hpFWD
2003EX Sedan 2.4L I-47.50 sec16.10 sec160 hpFWD
2003LX V-6 Sedan 3.0L V68.00 sec16.30 sec240 hpFWD
2004EX V-6 Coupe 3.0L V65.90 sec14.50 sec240 hpFWD
2005EX V-6 Sedan 3.0L V66.60 sec15.10 sec240 hpFWD
2005Hybrid Sedan 3.0L V6 + Elec 14-kW6.70 sec15.20 sec255 hpFWD

Service quick specs OEM factory data

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

This engine holds 4.4 qt of 5W-20 API engine oil, DOT 3 brake fluid. Torque lug nuts to 80 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

Brake FluidDOT 3
Engine Oil5W-20 · API
Engine Oil Capacity4.4 qt
Engine Oil5W-20 · API
Engine Oil Capacity4.5 qt

Engine torques

Camshaft Bearing/Carrier Cap Bolts or StudsM6 Bolts: 9 ft-lbs, M8 Bolts: 20 ft-lbs
Camshaft Bearing/Carrier Cap Bolts or Studs17 ft-lbs
Crankshaft Pulley and/or Damper Bolts181 ft-lbs
Engine Flywheel BoltsAT: 54 ft-lbs, MT: 76 ft-lbs
Engine Flywheel Bolts76 ft-lbs
Intake Manifold to Engine Bolts16 ft-lbs
Exhaust Manifold to Cylinder Head Bolts33 ft-lbs
Intake Manifold to Engine Bolts16 ft-lbs

Chassis torques

Lug Nuts80 ft-lbs
Automatic Transmission Drain Plug36.0 ft-lbs
Front Wheel Hub181 ft-lbs
Rear Wheel Hub134 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Cylinder Firing Order1-4-2-5-3-6
Curb Idle Speed (No Load)MT: 700, AT: 800 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug ManufacturerNGK
Spark Plug Torque13.0 ft-lbs
Spark Plug ManufacturerNGK
Spark Plug Gap0.039-0.0.043 in

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.10-1.21 lbs
Oil TypePAG 46
Oil Capacity5.33-5.83 oz
Standard BCI Group Number51R
Standard BCI Cranking Performance435 cca
Standard BCI Group Number35
Standard BCI Cranking Performance440 cca

Service checks

Regulated Fuel System Pressure (Without Vacuum)48.0-55.0 psi
Regulated Fuel System Pressure (Without Vacuum)48.0-55.0 psi
Regulated Fuel System Pressure (With Vacuum)55.0-63.0 psi
Engine Compression135 minimum PSI. 28 maximum variation PSI.
Engine Oil Pressure10 psi @ Idle, 44 psi @ 3000 rpm psi
Engine Oil Pressure10 psi @ Idle, 71 psi @ 3000 rpm psi
Intake Valve Lash0.008-0.010 in
Exhaust Valve Lash0.011-0.013 in

Brakes

Brake ApplicationWITH REAR DISC
Torque Caliper to Bracket17 ft-lbs / 36 ft-lbs
Torque to Knuckle28 ft-lbs / 80 ft-lbs
Brake ApplicationWITH REAR DISC
Torque Caliper to Bracket18 ft-lbs / 80 ft-lbs
Torque to Knuckle28 ft-lbs / 80 ft-lbs
Torque to Knuckle80 ft-lbs
Minimum Pad ThicknessFront: 0.050; Rear: 0.060 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
114 ft. lbs., Step 2: 9014 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
114 ft. lbs., Step 2: 9014 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
136 ft. lbs., step 2: 9036 ft. lbs
Cylinder Head — tightening sequence 4 stages

Prep Apply engine oil to bolt thread and under-bolt heads, If using old bolts:

129 ft. lbs.29 ft. lbs
290 degrees90 degrees
390 degrees; If using new bolts:90 degrees
129 ft. lbs.29 ft. lbs
290 degrees90 degrees
390 degrees90 degrees
490
Cylinder Head — tightening sequence 3 stages
129.0.0 ft. lbs.
251.0 ft. lbs.51 ft. lbs
372.3 ft. lbs.72.3 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 at 105,000 mi; coolant at 120,000 mi. The big-interval services (at 120,000 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) · Tire & Wheel Assembly (rotate)
Every 15,000 miBrake Line (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Engine Oil Filter (replace) · Exhaust System (Complete) (inspect) · Fuel Line (inspect)
Every 30,000 miAccessory Drive Belt (inspect) · Cabin Air Filter (replace) · Engine Air Filter Element (replace)
At 105,000 miEngine Valves (inspect valve lash) · Spark Plugs (replace) · Timing Belt (replace) · Water Pump (inspect)
At 120,000 miEngine Coolant System (drain, flush & refill) · Transmission Assembly (drain & refill)
At 165,000 miUniversal Vehicle Operation (inspect idle speed)
At 180,000 miEngine Coolant System (drain, flush & refill)

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 Honda Accord stands out sharply in the federal record as a peak year for complaints and recalls within the broader generation. Complaints jumped to 2,013 from 1,066 in 2002 and 1,016 in 2004, while recalls hit 24—the highest in the entire dataset from 1990 to 2022—compared to 16 in 2002 and 22 in 2004. The top complaint areas were power train (812), air bags (267), service brakes (121), and electrical system (89), with 158 crash-related and 19 fire-related complaints. This spike suggests the 2003 model year was a particularly troubled point in the Accord's lifecycle, likely reflecting early-production issues for the redesigned seventh generation. Given the elevated risk indicated by the data, the 2003 Accord is not a recommended buy compared to the preceding or following years.

24
Open recalls
NHTSA campaigns
388
Service bulletins
Manufacturer communications
5
ODI investigations
Office of Defects Investigation
2,013
Owner complaints
158 involved a crash · 19 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★★

Owner complaints filed with NHTSA, by component

All 2,013 complaints on record, top 8 components.

Power Train812
Air Bags267
Service Brakes, Hydraulic121
Electrical System89
Steering62
Engine & Engine Cooling57
Structure51
Vehicle Speed Control45

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 24 campaigns on record for this vehicle.

19V182000Air Bags:Frontal:Driver Side:Inflator ModuleReported 06/03/2019

Honda (American Honda Motor Co.) is recalling specific 2003 Acura 3.2CL, 2013-2016 ILX, 2013-2014 ILX Hybrid, 2003-2006 MDX, 2007-2016 RDX, 2002-2003 3.2TL, 2004-2006, and 2009-2014 TL, 2010-2013 ZDX and 2001-2007 and… Remedy: Honda will notify owners, and dealers will replace the driver's air bag inflator with an alternate inflator, free of charge. The recall began April 10, 2019. Honda owners may…

19E068000Vehicle Speed Control:Accelerator PedalReported 10/10/2019

Dorman Products, Inc. (Dorman) is recalling certain Accelerator Pedal Assemblies part numbers 699-114 and 825-5029-1, sold as replacement parts for 2003-2006 Acura MDX, 2004-2008 Acura TL and TSX, 2003-2007 Honda… Remedy: Dorman will notify owners, and qualified service facilities will replace the affected accelerator pedal assemblies, free of charge. The recall began December 9, 2019. Owners may…

Technical service bulletins NHTSA · verified

Showing 5 of 388 bulletins on record with NHTSA.

BulletinDateComponentSummary
A20-0152022-05-03Air BagsService bulletin - This bulletin is a notification of a class action settlement relating…
A21-0542021-05-28Power TrainService Bulletin - Case v. American Honda Motor Co., Inc., Case No. BC 424169 (Third…
A20-0152020-03-10Air BagsService Bulletin - This bulletin is a notification of a class action settlement relating…
A20-0102020-03-10Air BagsService Bulletin - This bulletin is a notification of a class action settlement relating…
DORE5C4S092019-07-11SuspensionThis SKU is a Front Upper Ball Joint. The customer communication requested return of…

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 Accord. 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 Accord take?

4.4 qt of 5W-20 API, per the factory manual.

Does the 2003 Accord have open recalls?

NHTSA lists 24 recall campaign(s) for this model year. Check your specific vehicle by VIN.