Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2015 X4.
The 2015 BMW X4 is a passenger car that holds an 8.0‑quart oil capacity and offers EPA fuel‑economy ratings of 20/28/23 mpg, with recommended viscosities of 0W‑30, 0W‑40 or 5W‑30, and is paired with an eight‑speed automatic transmission. Its reliability record documents five recalls and a total of 18 owner complaints, with engine and engine‑cooling issues as well as electrical system problems comprising the most frequent concerns. The model’s complaint history covers model years 2014 through 2026, peaking at 14 complaints in 2020, while the 2015 figure of 18 reflects a comparatively higher early‑life issue rate, though recent years have seen complaints drop to as few as two.
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 · 800 CCA battery, OE oil filter 11428683168. 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 | 11428683168 alt 11428637820 |
| Engine air filter | 13717571355 alt 13717601868 |
| Spark plug | 12120037582 alt 12120039664 |
| Battery | 61217598775 alt 61217639053 |
| Front wiper blades | 61612458017 |
| Thermostat | 11537586784 alt 11538635689 |
| Cabin air filter | 64119237159 alt 64319312318 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (S8) |
| Overall length | 183.9 in |
| Overall width | 74 in |
| Overall height | 63.8 in |
| Wheelbase | 110.6 in |
| Curb weight | 4129 lb |
| Track (front / rear) | 63.8 / 64.2 in |
| Weight distribution (front / rear) | 49/51 |
| EPA city / highway / combined | 20 / 28 / 23 mpg |
| Drivetrain | All-Wheel Drive |
| Recommended fuel | Premium Gasoline |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the X4 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 |
|---|---|---|---|---|---|
| 2015 | xDrive35i 3.0L turbo I-6 | 5.10 sec | 13.70 sec | 300 hp | AWD |
| 2015 | xDrive35i 3.0L Turbo I-6 | 5.20 sec | 13.80 sec | 300 hp | AWD |
| 2015 | xDrive35i 3.0L Turbo I-6 | 5.20 sec | 13.90 sec | 300 hp | AWD |
| 2015 | xDrive28i 2.0L Turbo I-4 | 5.90 sec | 14.60 sec | 240 hp | AWD |
| 2015 | xDrive28i 2.0L Turbo I-4 | 6.30 sec | 15.00 sec | 240 hp | AWD |
| 2017 | M40i 3.0L Turbo I-6 | 4.40 sec | 13.10 sec | 355 hp | AWD |
| 2017 | M40i 3.0L Turbo I-6 | 4.90 sec | 13.60 sec | 355 hp | AWD |
| 2017 | xDrive28i 2.0L Turbo I-4 | 6.20 sec | 14.90 sec | 240 hp | AWD |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 8.0 qt of 0W-30 / 0W-40 / 5W-30 engine oil, Hypoid axle oil G1 in the differential, DOT 4 brake fluid. Torque 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.
| Brake Fluid | DOT 4 |
| Clutch Fluid | DOT 4 |
| Differential Gear Oil | Hypoid axle oil G1 |
| Differential Gear Oil Capacity | 1.5-3.5 |
| Engine Oil | 0W-30 · 0W-40 · 5W-30 · 5W-40 |
| Engine Oil Capacity | 8.0 qt |
| Engine Oil | Synthetic · SAE 5W |
| Engine Oil Capacity | 5.1 qt |
| Crankshaft Pulley and/or Damper Bolts | 30 ft-lbs |
| Crankshaft Pulley and/or Damper Bolts | 30 ft-lbs |
| Intake Manifold to Engine Bolts | 11 |
| Engine Oil Pan Drain Plug | M12 Bolts: 18.0, M22 Bolts: 44.0 ft-lbs |
| Cylinder Firing Order | 1-3-4-2 |
| Cylinder Firing Order | 1-5-3-6-2-4 |
| Spark Plug Manufacturer | BMW |
| Spark Plug Type | M14X1.25 |
| Spark Plug Gap | non-adjustable in |
| Spark Plug Torque | 20.0 - 24.3 ft-lbs |
| Refrigerant | R134a |
| Standard BCI Group Number | 94R |
| Standard BCI Cranking Performance | 800 cca |
| Standard BCI Group Number | 95R |
| Standard BCI Cranking Performance | 850 cca |
| Pressure Test | 21.7 psi |
| Radiator Cap Pressure Relief | 17-23 psi |
| Pressure Test | 21.7 psi |
| Radiator Cap Pressure Relief | 17-23 psi |
| Minimum Pad Thickness | Front: 0.145; Rear: 0.145 pads |
| Vented Rotor Minimum Thickness for Replacement | Stamped on rotor |
| Vented Rotor Minimum Thickness after Refinish | Stamped on rotor |
| Vented Rotor Maximum Scoring Depth | Stamped on rotor |
| Variation from Parallelism Thickness Variation | Stamped on rotor |
| Maximum Rotor Runout | Stamped on rotor |
Prep Do not reuse old bolts
| 1 | 22.0 ft. lbs. | 22 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | Bolts 1-10 90 degrees | 90 degrees |
| 4 | 45 degrees | 45 degrees |
Prep Do not reuse old bolts
| 1 | 22.0 ft. lbs. | 22 ft. lbs |
| 2 | 90 degrees | 90 degrees |
| 3 | Bolts 1-10 90 degrees | 90 degrees |
| 4 | 45 degrees | 45 degrees |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 2015 model year falls between the 2014 introductory data—which shows zero complaints and one recall—and the 2016 model year that experienced a significant spike to ten complaints, two recalls, and 183 technical service bulletins. Federal records indicate the generation's defect activity escalated substantially after 2015, peaking between 2019 and 2020 with fourteen complaints and ten recalls, followed by a gradual decline in subsequent years. For the 2015 target year specifically, documented grievances cluster around engine and electrical systems with three reports, alongside two crash complaints and one fire complaint, though the data does not specify underlying causes for these incidents. Positioned before the steep rise in TSBs and investigations that characterize 2016-2021 production, the 2015 model avoids the highest-risk period of this generation's lifecycle. However, the presence of early-production powertrain and electrical issues warrants thorough pre-purchase inspection. This represents a reasonably viable purchase year relative to the generation's peak trouble periods, provided service history confirms any applicable safety campaigns have been addressed.
All 18 complaints on record, top 8 components.
Source: NHTSA Office of Defects Investigation complaint database.
No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.
Showing 5 of 195 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B650526DCS | 2026-05-05 | Air Bags | Update - Recent F25 Air Bag Module Service Action |
| B068024 | 2024-10-31 | Structure | Wheel Arch Cover Return |
| 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.
8.0 qt of 0W-30, 0W-40, 5W-30, 5W-40 OIL MEETING BMW SPECIFICATION LL04, per the factory manual.
NHTSA lists 5 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 20 city / 28 highway / 23 combined mpg.