Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
| Every 30,000 mi | Oxygen Sensor (replace) |
| Every 50,000 mi | Timing Belt (inspect) |
Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1988 325i.
The 1988 BMW 325i carries a 4.8-quart engine oil capacity and runs on 20W-50, 15W-50, or 10W-50 API SL viscosity grades, anchoring it as an early entry in a nameplate whose broader complaint record from 1990 to 2012 swings from a single owner report in 2000 to a peak of 155 in 2001. For this specific model year, the documented reliability footprint is remarkably thin—just 5 total owner complaints, clustered around engine and engine cooling alongside visibility, with zero recalls on file. That relative quiet for the 1988 car, set against the model's volatile trouble spikes in later years, gives researchers a clean baseline from which to judge the 325i's reputation.
Fluid capacities, tune-up values and fuel economy at a glance.
Engine, drivetrain, dimensions and economy.
| Overall length | 175.2 in |
| Overall width | 65 in |
| Overall height | 54.3 in |
| Wheelbase | 101.2 in |
| Curb weight | 3007 lb |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the 325i 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 |
|---|---|---|---|---|---|
| 1988 | 325 325is Coupe 2.5L I-6 | 7.10 sec | 15.40 sec | 168 hp | RWD |
| 1988 | 325 325is Coupe 2.5L I-6 | 7.50 sec | 15.70 sec | 168 hp | RWD |
| 1988 | 325 325iX Coupe 2.5L I-6 | 7.80 sec | 15.90 sec | 168 hp | AWD |
| 1988 | 325 325iX Coupe 2.5L I-6 | 8.30 sec | 16.10 sec | 168 hp | AWD |
| 1987 | 325 325is Coupe 2.5L I-6 | 7.40 sec | 15.60 sec | 168 hp | RWD |
| 1987 | 325 325i Convertible 2.5L I-6 | 7.70 sec | 15.70 sec | 168 hp | RWD |
| 1987 | 325 325i Convertible 2.5L I-6 | 8.90 sec | 16.10 sec | 168 hp | RWD |
| 1989 | 325 325i sedan 2.5L I-6 | 7.50 sec | 15.50 sec | 168 hp | RWD |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4.8 qt of 20W-50 / 15W-50 / 10W-50 API SL engine oil, GL-5 in the differential, DOT 4 brake fluid.
| Brake Fluid | DOT 4 |
| Differential Gear Oil | GL-5 |
| Differential Gear Oil Capacity | 3.6 Pints |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 20W-50 · API · 15W-50 · 10W-50 · 5W-30 |
| Engine Oil Capacity | 4.8 qt |
| Power Steering Fluid | ATF |
Normal service, condensed from the factory interval matrix.
| Every 30,000 mi | Oxygen Sensor (replace) |
| Every 50,000 mi | Timing Belt (inspect) |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The federal record for the 1988 BMW 325i shows a distinct trend over time: complaints and recalls were relatively low in 1990 and 1991, then surged dramatically to 86 complaints and 10 recalls in 1992, marking an early peak. After a decline through 1994, a second, even larger spike occurred in 2001 with 155 complaints and 6 recalls, indicating that issues resurfaced as the vehicle aged. The 1988 model year sits at the beginning of this arc, and its top complaint areas—engine and engine cooling, service brakes, and structure—align with the types of problems that likely drove the 1992 and 2001 spikes. With one fire and one crash complaint also recorded, the data suggests that the 1988 325i experienced notable reliability challenges over its lifespan. Given these two significant waves of complaints and recalls, this model year may carry a higher risk of costly repairs; a buyer should carefully inspect the engine, brakes, and structural integrity before purchase.
All 5 complaints on record, top 5 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 1 of 1 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B510819 | 2024-01-16 | Electrical System | The basic conditions for initializing the power windows are not met. |
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.
4.8 qt of 14 degrees F TO 122 degrees F: 20W-50 API SL OR GREATER, -4 degrees F TO 104 degrees F: 15W-50 API SL, -22 degrees F TO 68 degrees F: 10W-50 API SL OR GREATER, -40 degrees F TO 23 degrees F: 5W-30 API SL OR GREATER, per the factory manual.
NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.