Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
Under the factory schedule, replace the spark plugs every 100,000 mi.
| Every 100,000 mi | Oxygen Sensor (replace) · Spark Plugs (replace) |
Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 325CI.
The 2003 BMW 325CI rides on the E46 platform with the Automatic (S5) transmission, calling for 7.0 quarts of oil in 15W-40, 10W-40, or 10W-30 API SJ viscosity grades. EPA fuel economy ratings register 18 mpg city, 26 mpg highway, and 21 mpg combined, situating this model year within the E46 generation’s established efficiency and maintenance parameters. These technical specifications—specifically the lubrication volumes and consumption benchmarks—reflect the standardized mechanical requirements that define this chassis code across its production span.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses a BCI 94R · 640 CCA battery, OE oil filter 11421741000. 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.
| Engine oil filter | 11421741000 alt 11421719855 |
| Engine air filter | 13721730449 |
| Fuel filter | 13327512019 |
| Spark plug | 12120037607 alt 12129071003 |
| Battery | 61216924021 alt 61218381749 |
| Front wiper blades | 61617004901 alt 61612458347 |
| Thermostat | 11537509357 alt 11537509227 |
| Cabin air filter | 64319216590 alt 64318370409 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (S5) |
| Overall length | 176.8 in |
| Overall width | 69.3 in |
| Overall height | 53.9 in |
| Wheelbase | 107.5 in |
| Curb weight | 3560 lb |
| Track (front / rear) | 57.9 / 58.3 in |
| Weight distribution (front / rear) | 50/50 |
| EPA city / highway / combined | 18 / 26 / 21 mpg |
| Drivetrain | Rear-Wheel Drive |
| Recommended fuel | Premium Gasoline |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 7.0 qt of 15W-40 / 10W-40 / 10W-30 API SJ engine oil, DOT 4 brake fluid. Torque lug nuts to 88 ft-lbs. The firing order is 1-5-3-6-2-4. 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.
| Brake Fluid | DOT 4 |
| Differential Gear Oil Capacity | 2.1 Pints |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 15W-40 · API · 10W-40 · 10W-30 · 5W-30 |
| Engine Oil Capacity | 7.0 qt |
| Power Steering Fluid | ATF |
| Crankshaft Pulley and/or Damper Bolts | 302 ft-lbs |
| Engine Flywheel Bolts | 85 ft-lbs |
| Lug Nuts | 88 ft-lbs |
| Cylinder Firing Order | 1-5-3-6-2-4 |
| Ignition Coil Primary Resistance | 0.8 ohms |
| Spark Plug Manufacturer | BMW |
| Refrigerant | R134a |
| Refrigerant Capacity | 1.58-1.69 lbs |
| Oil Group | PAG |
| Standard BCI Group Number | 94R |
| Standard BCI Cranking Performance | 640 cca |
| Optional BCI Group Number | 49 |
| Optional BCI Cranking Performance | 850 cca |
| Engine Compression | 142-156 psi |
| Engine Oil Pressure | 10.5 |
| Intake Valve Lash | Hydraulic in |
| Exhaust Valve Lash | Hydraulic in |
| Brake Application | WITH HIGH PERFORMANCE BRAKES / WITH STANDARD |
| Torque Caliper to Bracket | 18-22 ft-lbs / 81 ft-lbs |
| Torque to Knuckle | 81 ft-lbs / 49 ft-lbs / 81-96 ft-lbs |
| Minimum Pad Thickness | Front: 0.079; Rear: 0.079 in |
| Brake Application | WITH HIGH PERFORMANCE BRAKES / WITH STANDARD |
| Rotor Minimum Machining | 0.031 in |
| Rotor Discard at or Under | 0.921 in / 0.803 in / 0.685 in |
| Rotor Finish | 0.5 - 3.5 μin |
| 1 | 14 ft. lbs., Step 2: 70 | 14 ft. lbs |
| 1 | 29.5 ft. lbs. | 29.5 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | 90 | |
| 1 | 14-18 ft. lbs., Step 2: 50 | 14–18 ft. lbs |
Normal service, condensed from the factory interval matrix.
Under the factory schedule, replace the spark plugs every 100,000 mi.
| Every 100,000 mi | Oxygen Sensor (replace) · Spark Plugs (replace) |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Showing 2 of 6 campaigns on record for this vehicle.
BMW of North America, LLC (BMW) is recalling certain 2000-2005 323iT, 325iT, 325xiT, 320i, 323i, 325i, 325xi, 328i, 330i and 330xi and 2000-2006 323Ci, 325Ci, 328Ci, 330Ci, M3 Coupe, 323Cic, 325Cic, 330Cic, and M3… Remedy: BMW will notify owners, and dealers will replace the passenger's front air bag, free of charge. The recall began February 13, 2020. Owners may contact BMW customer service at…
BMW of North America, LLC (BMW) is recalling certain model year 2002-2005 325i, 325xi, 330i, and 330xi Sedans, and 325xi and 325i Sportswagons, 2002-2006 330Ci, 325Ci, and M3 Convertibles and 325i, 330i, and M3 Coupes… Remedy: Owners are advised not to drive their vehicles until the vehicle has been remedied. BMW will notify owners, and dealers will replace the front driver air bag module, free of…
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
7.0 qt of HIGH PERFORMANCE MINERAL OILS: ABOVE 5 degrees F: 15W-40 API SJ, SL OR SM, -5 degreesF TO 68 degrees F: 10W-40 API SJ, SL OR SM, 5 degreesF TO 50 degrees F: 10W-30 API SJ, SL OR SM, BELOW 50 degrees F: 5W-30 API SJ, SL OR SM, BELOW 32 degrees F:, per the factory manual.
NHTSA lists 6 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 18 city / 26 highway / 21 combined mpg.