Car Model History

Four-door rear-wheel-drive sedan · 2.5-liter M20 inline-six (168 hp / 164 lb-ft)

1991 BMW 325i Four-Door

The preserved 1991 U.S. records identify the 325i four door as a distinct E30 configuration.

1991 BMW 325i E30 Touring, front three-quarter view
Exact 1991 3 Series reference photograph; exact configuration not verified ·

Photo: “1991 BMW 325I Touring (13146069314).jpg” by Kieran White from Manchester, England / Wikimedia Commons, licensed under CC BY 2.0. Cropped to 16:9.

Factory configuration

What this model is

Trim
325i
Body style
Four-door rear-wheel-drive sedan
Engine
2.5-liter M20 inline-six (168 hp / 164 lb-ft)
Transmission
5-speed manual or optional 4-speed automatic

Standalone option packages are not promoted into separate configurations.

Configuration-specific ownership

Maintenance for this exact configuration

These items are filtered to the engine, transmission, trim, and model-year applicability recorded for this configuration. Broad Amazon category searches are suppressed here; shopping links appear only beside catalog-backed part numbers.

Service desk

What this car needs & when

Use this as a service-planning checklist for 1991 BMW 325i Four-Door. Start with the interval, confirm which engine or configuration you have, then use an exact ordering reference when one is verified.

Service topics
9
Factory intervals
8
Fitment-scoped
9
Exact references
1

Before orderingIdentify your engine, options and build date.Part numbers and sizes can change within one model year. Shopping links appear only for catalog-backed references; still verify the listing against your vehicle before ordering.

  • Engine oil and filter

    Sourced interval available

    Applies to: 1991 · M20 2.5L inline-six · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 7,500 mi / 12,000 km / 6 months · Maximum guideline; service sooner when the on-board indicator calls for it.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Service Intervals/Equivalent Mileage — Oil Service maximum; Indicated Engine Oil Service · checked

  • Inspection I

    Sourced interval available

    Applies to: 1991 · M20 2.5L inline-six · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 15,000 mi / 24,000 km / 12 months · Maximum guideline; alternate with Oil Service and Inspection II as indicated.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Service Intervals/Equivalent Mileage — Inspection I maximum · checked

    Inspection II

    Applies to: 1991 · M20 2.5L inline-six · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 30,000 mi / 48,000 km / 24 months · Maximum guideline; includes Inspection I plus the additional published tasks.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Service Intervals/Equivalent Mileage — Inspection II maximum · checked

  • Brake fluid

    Sourced interval available

    Applies to: 1991 · M20 2.5L inline-six · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 24 months · BMW's archived Inspection I note specifies replacement every two years.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service I — brake-fluid replacement note · checked

  • Automatic-transmission fluid, strainer, and gasket

    Sourced interval available

    Applies to: 1991 · M20 2.5L inline-six · automatic · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 15,000 mi / 24,000 km / 12 months · At Inspection I; maximum guideline and indicator may call sooner.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service I — automatic-transmission fluid/strainer/gasket · checked

    Manual-transmission fluid

    Applies to: 1991 · M20 2.5L inline-six · manual · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 30,000 mi / 48,000 km / 24 months · At Inspection II; maximum guideline and indicator may call sooner.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service II — manual-transmission fluid · checked

  • Main fuel filter

    Sourced interval available

    Applies to: 1991 · M20 2.5L inline-six · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 30,000 mi / 48,000 km / 24 months · At Inspection II; maximum guideline and indicator may call sooner.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service II — main fuel-filter replacement · checked

  • Engine air filter

    Sourced interval available

    Applies to: 1991 · M20 2.5L inline-six · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 30,000 mi / 48,000 km / 24 months · At Inspection II; maximum guideline and indicator may call sooner.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service II — air-filter replacement · checked

  • Spark plugs

    Sourced interval available

    Applies to: 1991 · M20 2.5L inline-six · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 30,000 mi / 48,000 km / 24 months · At Inspection II; maximum guideline and indicator may call sooner.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service II — spark-plug replacement · checked

  • Engine coolant

    Sourced interval available

    Applies to: 1991 · M20 2.5L inline-six · 325i (E30) · United States · Exact 1991 325i record; other E30 engines, body styles, iX, and M3 configurations are not claimed.

    Published interval: 24 months · BMW replacement recommendation in the Inspection II schedule.

    Source: BMW — 1991 325i (E30/M20) service-indicator schedule, preserved by Operation CHARM · Indicated Inspection Service II — coolant replacement note · checked

  • Engine oil filter — catalog fitment

    Exact reference available

    Applies to: 1991 · United States

    2.5-liter M20 inline-six (168 hp / 164 lb-ft) — K&N HP-2009

    K&N HP-2009

    Manufacturer-catalog replacement-part fitment only; it does not establish a BMW service interval. Confirm the VIN, production date, engine, and installed filter dimensions before ordering.

    Applies to: 1991 · 2.5-liter M20 inline-six (168 hp / 164 lb-ft) · 325i · United States · Exact model-year and engine-family catalog scope; verify VIN and production date before ordering.

    Source: K&N — BMW 325i replacement oil-filter catalog · 1991 BMW 325i/325is 2.5L gasoline — HP-2009 · checked

    Verified ordering references

    2.5-liter M20 inline-six (168 hp / 164 lb-ft) — K&N HP-2009

    K&N HP-2009

    Manufacturer-catalog replacement-part fitment only; it does not establish a BMW service interval. Confirm the VIN, production date, engine, and installed filter dimensions before ordering.

    Applies to: 1991 · 2.5-liter M20 inline-six (168 hp / 164 lb-ft) · 325iX · United States · Exact model-year and engine-family catalog scope; verify VIN and production date before ordering.

    Source: K&N — BMW 325i replacement oil-filter catalog · 1991 BMW 325i/325is 2.5L gasoline — HP-2009 · checked

    Verified ordering references

Sources

  1. BMW — 1991 U.S. factory service-manual model and engine roster (Operation CHARM mirror)
  2. BMW of North America — 1991 U.S. 318i reintroduction, engine output, and pricing history
  3. BMW Car Club of America — January/February 1991 3 Series Update
  4. BMW of North America — first-generation U.S. M3 history and specification

Other 1991 configurations

Filter all 1991 configurations →