Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2010 128I Convertible.
The 2010 BMW 128i Convertible is a passenger‑car built on the E88 chassis, pairing the sport‑oriented platform with an automatic S6 transmission and a modest 6.9‑quart oil capacity that accepts 15W‑40, 10W‑40 or 10W‑30 API SJ lubricants. Its fuel‑economy figures of 18 mpg city, 28 mpg highway and a combined 22 mpg reflect the balance BMW struck between open‑air driving dynamics and everyday efficiency. Across the model year, owners reported a relatively low total of 45 complaints, with air‑bag issues emerging as the most frequent concern and ten recalls issued, positioning the 2010 iteration as generally reliable but one that warrants attention to its safety‑system maintenance.
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 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 11428637821 |
| Engine air filter | 13717542294 |
| Fuel filter | 16117163295 |
| Spark plug | 12122158253 alt 12120037663 |
| Front wiper blades | 61615A87C97 |
| Thermostat | 11537549476 |
| Cabin air filter | 64319313519 alt 64319142114 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (S6) |
| Overall length | 172 in |
| Overall width | 68.9 in |
| Overall height | 55.5 in |
| Wheelbase | 104.7 in |
| Curb weight | 3258 lb |
| Track (front / rear) | 57.5 / 58.3 in |
| Weight distribution (front / rear) | 52/48 |
| EPA city / highway / combined | 18 / 28 / 22 mpg |
| Drivetrain | Rear-Wheel Drive |
| Recommended fuel | Premium Gasoline |
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 oil drain plug to 18.4 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 | BMW part number 83220142516 |
| Automatic Transmission Fluid Capacity | 10.5-11.5 |
| Brake Fluid | DOT 4 |
| Differential Gear Oil Capacity | 1.5 Pints |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 15W-40 · API · 10W-40 · 10W-30 · 5W-30 |
| Engine Oil Capacity | 6.9 qt |
| Manual Transmission Fluid | BMW MTF part number 83229408942 |
| Crankshaft Pulley and/or Damper Bolts | 18 ft-lbs |
| Intake Manifold to Engine Bolts | 11 ft-lbs |
| Exhaust Manifold to Cylinder Head Bolts | 15 ft-lbs |
| Engine Oil Pan Drain Plug | 18.4 ft-lbs |
| Lug Nuts | 88 ft-lbs |
| Cylinder Firing Order | 1-5-3-6-2-4 |
| Spark Plug Manufacturer | BMW |
| Refrigerant | R134a |
| Oil Group | PAG |
| Standard BCI Group Number | 48 |
| Standard BCI Cranking Performance | 570 cca |
| Optional BCI Group Number | 94R |
| Optional BCI Cranking Performance | 640 cca |
| Pressure Test | 21.7 psi |
| Radiator Cap Pressure Relief | 19-23 psi |
| Thermostat Opening Temperature | 190 °F |
| Engine Compression | 130-261 PSI. 29 maximum variation. psi |
| Brake Application | WITH 11.81 inch ROTOR / WITH FN3 |
| Torque to Knuckle | 48 ft-lbs / 81 ft-lbs |
| Minimum Pad Thickness | Front: 0.145; Rear: 0.145 pads |
| Brake Application | WITH 11.81 inch ROTOR / WITH FN3 |
| Rotor Nominal Thickness From | 0.787 in / 0.945 in / 0.866 in / 1.024 in |
| Rotor Nominal Thickness To | 0.787 in / 0.945 in / 0.866 in / 1.024 in |
| Rotor Discard at or Under | 0.724 in / 0.881 in / 0.803 in / 0.961 in |
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 |
Normal service, condensed from the factory interval matrix.
Under the factory schedule, replace the spark plugs every 60,000 mi.
| Every 60,000 mi | Spark Plugs (replace) |
| Every 100,000 mi | Transmission Assembly (drain & refill) |
| At 150,000 mi | Oxygen Sensor (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 2010 BMW 128I Convertible lead in one area — the air bags, 12 of 45 reports (27%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 2 of the reports describe a crash and 2 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 45 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 174 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B611026 | 2026-04-23 | Electrical System | While performing a 12-Volt battery jump start, disconnect, or replacement, Vehicle test… |
| 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… |
| B068824 | 2024-12-18 | Unknown Or Other | Screw Cap Return |
| B068624 | 2024-12-04 | Unknown Or Other | Socket Housing Return |
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.
NHTSA lists 10 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 18 city / 28 highway / 22 combined mpg.