Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2006 X3 2.5I.
The 2006 BMW X3 2.5i is an SUV built on BMW's E83 platform, with the 2.5i designation pointing to its specific engine variant within the lineup. Service requirements call for a 6.6-quart oil capacity using 15W-40, 10W-40, or 10W-30 viscosities meeting API SJ standards, baseline specs that frame the routine maintenance picture for owners and technicians alike. Reliability data, however, tells a more complicated story: this model year has accumulated 345 owner complaints, with air bags emerging as the most frequently cited issue area, alongside 5 recalls recorded against the chassis. For a researcher mapping the X3's reliability arc, that 2006 cluster of complaints and recalls positions the model year as a high-friction entry worth weighing carefully against later production runs.
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 48 · 570 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 | 16146766158 |
| Spark plug | 12129071003 alt 12120037607 |
| Battery | 61218381762 alt 61218381738 |
| Front wiper blades | 61613427726 alt 61610443590 |
| Thermostat | 11537509357 alt 11537509227 |
| Cabin air filter | 64319216590 |
Engine, drivetrain, dimensions and economy.
| Overall length | 179.9 in |
| Overall width | 72.8 in |
| Overall height | 65.7 in |
| Wheelbase | 109.8 in |
| Curb weight | 4001 lb |
| Track (front / rear) | 58.7 / 59.8 in |
| Weight distribution (front / rear) | 50/50 |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 6.6 qt of 15W-40 / 10W-40 / 10W-30 API SJ engine oil, DOT 4 brake fluid. Torque lug nuts to 88 ft-lbs, the oil drain plug to M12 Bolts: 18.0, M22 Bolts: 44.0 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.
| Automatic Transmission Fluid | See stamp |
| Brake Fluid | DOT 4 |
| Differential Gear Oil Capacity | 1.5 Pints |
| Differential Gear Oil Capacity | 1.9 Pints |
| 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 | 6.6 qt |
| Crankshaft Pulley and/or Damper Bolts | 302 ft-lbs |
| Crankshaft Pulley and/or Damper Bolts | 18 ft-lbs |
| Engine Flywheel Bolts | AT: 89 ft-lbs, MT: 78 ft-lbs |
| Engine Flywheel Bolts | AT: 89 ft-lbs, MT: 76 ft-lbs |
| Engine Oil Pan Drain Plug | M12 Bolts: 18.0, M22 Bolts: 44.0 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 17 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 17 ft-lbs |
| Lug Nuts | 88 ft-lbs |
| Transfer Case Fill Plug | 24.0 ft-lbs |
| Transfer Case Drain Plug | 24.0 ft-lbs |
| Front Wheel Hub | 310 ft-lbs |
| Rear Wheel Hub | 221 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 | 1.00-1.75 lbs |
| Oil Group | PAG |
| Oil Type | 46 |
| Standard BCI Group Number | 48 |
| Standard BCI Cranking Performance | 570 cca |
| Optional BCI Group Number | 49 |
| Optional BCI Cranking Performance | 900 cca |
| Pressure Test | 21.7 psi |
| Radiator Cap Pressure Relief | 28-32 psi |
| Thermostat Opening Temperature | 190 °F |
| Pressure Test | 21.7 psi |
| Radiator Cap Pressure Relief | 28-32 psi |
| Thermostat Opening Temperature | 176 °F |
| Engine Compression | 146-159 PSI. |
| Engine Compression | 130-261 PSI. 29 maximum variation. psi |
| Torque Caliper to Bracket | 30 ft-lbs |
| Torque to Knuckle | 110 ft-lbs / 67 ft-lbs |
| Minimum Pad Thickness | Front: 0.145; Rear: 0.145 pads |
| Rotor Nominal Thickness From | 0.984 in / 0.866 in |
| Rotor Nominal Thickness To | 0.984 in / 0.866 in |
| Rotor Minimum Machining | 0.031 in |
| Rotor Discard at or Under | 0.921 in / 0.803 in |
| Rotor Finish | 0.5 - 3.5 μin |
| 1 | 4 ft. lbs., Step 2: 15 ft. lbs., Step 3: 70 | 4 ft. lbs |
| 1 | 4 ft. lbs., Step 2: 15 ft. lbs., Step 3: 70 | 4 ft. lbs |
| 1 | 29.5 ft. lbs. | 29.5 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | 90 | |
| 1 | 29.5 ft. lbs. | 29.5 ft. lbs |
| 2 | 90.0 ft. lbs. | 90 ft. lbs |
| 3 | 90.0 ft. lbs. | 90 ft. lbs |
| 1 | 15 ft. lbs., Step 2: 70 | 15 ft. lbs |
| 1 | 15 ft. lbs., Step 2: 70 | 15 ft. lbs |
Normal service, condensed from the factory interval matrix.
Under the factory schedule, replace the spark plugs every 100,000 mi.
| Every 30,000 mi | Transfer Case Assembly (inspect fluid level) |
| 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.
Owner complaints about the 2006 BMW X3 2.5I dominate in one area — the air bags, 146 of 345 reports (42%), well ahead of the next concern. That matters, because the air bags are also the target of recalls 17V-605 and 08V-384 on this vehicle — so the single most useful check before buying or servicing one is confirming they were actually performed. 13 of the reports describe a crash and 17 a fire — a small share of the total, but worth weighing against the air bags pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 345 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 2 campaigns on record for this vehicle.
BMW of North America, LLC (BMW) is recalling certain 2006-2010 BMW X3 2.5i, X3 3.0i and X3 xDrive30i Sports Activity Vehicles. The front passenger seat occupant detection mat that determines if, and how, the passenger… Remedy: BMW will notify owners, and dealers will replace the front passenger seat occupant detection mat, free of charge. Interim owner notification letters were mailed on November 27…
BMW IS RECALLING 200,000 MY 2006 3 SERIES SPORT SEAT, MY 2004-2006 5 SERIES STANDARD AND SPORT SEAT, AND MY 2004-2006 X3 PASSENGER VEHICLES. DEPENDING ON THE MANNER AND FREQUENCY OF THE FRONT PASSENGER'S ENTRY AND EXIT… Remedy: DEALERS WILL REWORK THE FRONT PASSENGER SEAT SENSOR MAT SO THAT EXTERNAL FORCE APPLICATION TO THE SEAT DOES NOT CAUSE A CRACK TO THE MAT. THE RECALL BEGAN ON NOVEMBER 6, 2008. BMW…
Showing 5 of 129 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B012016 | 2025-03-13 | Electrical System | The Footwell Module (FRM) limited warranty for defects in materials and / or workmanship… |
| B012016 | 2025-02-20 | Electrical System | The Footwell Module (FRM) limited warranty for defects in materials and / or workmanship… |
| B410722 | 2024-04-04 | Structure | While driving the vehicle on normal roads at10mph and above, a "cracking" sound from the… |
| B510819 | 2024-01-16 | Electrical System | The basic conditions for initializing the power windows are not met. |
| B611305 | 2024-01-11 | Electrical System | The electrical system of BMW vehicles has been subject to an ongoing development process… |
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.
6.6 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 5 recall campaign(s) for this model year. Check your specific vehicle by VIN.