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 525I.
The 2003 BMW 525I. It takes 6.9 qt of 15W-40 engine oil and is EPA-rated at 18/26/21 mpg city/highway/combined.
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 11427512300 |
| Engine air filter | 13721730449 |
| Fuel filter | 13321709535 |
| Spark plug | 12120037607 alt 12129071003 |
| Battery | 61218381762 |
| Front wiper blades | 61619070579 |
| Thermostat | 11537509357 alt 11537509227 |
| Cabin air filter | 64312207985 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (S5) |
| Overall length | 188.2 in |
| Overall width | 70.9 in |
| Overall height | 56.7 in |
| Wheelbase | 111.4 in |
| Curb weight | 3450 lb |
| Track (front / rear) | 59.4 / 60.2 in |
| Weight distribution (front / rear) | 52/48 |
| EPA city / highway / combined | 18 / 26 / 21 mpg |
| Drivetrain | Rear-Wheel Drive |
| Passenger volume | 93 cu ft |
| Cargo volume | 11 cu ft |
| Recommended fuel | Premium Gasoline |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the 525I of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.
| Year | Trim / engine | 0–60 | ¼ mile | HP | Drivetrain |
|---|---|---|---|---|---|
| 1993 | Touring 2.5L I-6 | 11.50 sec | 18.50 sec | 189 hp | RWD |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 6.9 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 | 6.9 qt |
| Power Steering Fluid | ATF |
| Crankshaft Pulley and/or Damper Bolts | 302 ft-lbs |
| Engine Flywheel Bolts | 71-80 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 | 1.60-3.00 lbs |
| Oil Group | PAG |
| Oil Type | 46 |
| Standard BCI Group Number | 94R |
| Standard BCI Cranking Performance | 640 cca |
| Optional BCI Group Number | 49 |
| Optional BCI Cranking Performance | 720 cca |
| Engine Compression | 142-156 psi |
| Engine Oil Pressure | 10.5 |
| Intake Valve Lash | Hydraulic in |
| Exhaust Valve Lash | Hydraulic in |
| Torque Caliper to Bracket | 81 ft-lbs / 18-22 ft-lbs |
| Torque to Knuckle | 81-96 ft-lbs / 49 ft-lbs |
| Minimum Pad Thickness | Front: 0.079; Rear: 0.079 in |
| Rotor Minimum Machining | 0.031 in |
| Rotor Discard at or Under | 0.803 in / 0.724 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 | 33 ft. lbs., Step 2: 46 | 33 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) |
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.
6.9 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.
EPA figures are 18 city / 26 highway / 21 combined mpg.