Manufacturer-backed new global model / United States / 2025

BMW 3 Series

US-market BMW 3 Series sport sedan family including 330i and distinct higher-output M340i variants.

Luxury sedansUnited States2025 manufacturer edition
01 / Owner question

Do the 2025 BMW 330i and M340i use the same engine?

No. BMW specifies a B48 2.0-litre four-cylinder for the 2025 330i and a B58 3.0-litre six-cylinder for the M340i. Their factory output and maintenance specifications must be kept separate.

02 / Verifiable model data

What the manufacturer actually specifies

Exact model-year, market and equipment conditions apply to each reference.
SpecificationPublished valueApplicability
330i gasoline engine output255 hp2025 US BMW 330i with B48B20O2 2.0L four-cylinder
M340i total system output386 hp2025 US BMW M340i B58 3.0L with 48V mild hybrid; not the 330i

Equipment and year check: BMW 330i, M340i and M3 are different vehicles for engine service. Model names alone do not establish transmission fill, battery or tyre fitment.

Ownership coverage / source edition versus exact vehicle

Your owner's reference: what's known and what's missing

We're bringing every international vehicle to the same evidence and maintenance structure as our exact-code dossiers. This page has manufacturer-edition information, not a fully verified chassis/VIN service record. Each topic below shows the current evidence level.

Published engine- and drivetrain-specific configuration records

These are 2025 US configuration records with original manufacturer source citations. They are not VIN matches; confirm the installed engine, wheel package and actual vehicle identifier before choosing service parts.

Factory model specifications

Model-edition evidence

2 original manufacturer-edition data points. Read each row's market, engine and equipment conditions; none covers every VIN.

Oil, fluids & scheduled maintenance

Source guidance · exact vehicle check needed

1 original service-source reference available for named variants. A complete VIN-matched oil approval, refill quantity and schedule has NOT been established for every version.

Tyres, wheels & batteries

Exact-vehicle evidence pending

No universal tyre/pressure or battery value is claimed. Confirm the door placard, fitted wheel and exact factory electrical system.

OEM parts & fitment

Source guidance · exact vehicle check needed

OEM catalog identification instructions are available. No replacement part is marked compatible without matching engine, code, configuration and VIN.

Warning lights & diagnostics

Source guidance · exact vehicle check needed

Safety-oriented manufacturer warning guidance is available, but no fault code, repair diagnosis or guaranteed fix is inferred.

Recalls & campaigns

Exact-vehicle evidence pending

No VIN/jurisdiction-specific recall determination is available in this model research profile. Check the manufacturer's official VIN recall lookup.

Maintenance & DIY guides

Exact-vehicle evidence pending

No exact-variant DIY procedure is attached here yet. Text instructions will be published only after safety and source checks; images are managed separately.

Manufacturer service evidence for named configurations

2025 US BMW 330i G20 RWD/xDrive only; does not establish all 3 Series, M340i or regional oil quantities

These are from BMW 330i G20: service, warnings and parts identity. They may apply only to some configurations within this model family; they are not automatically VIN-approved catalog facts.

Original source evidence. Match the exact listed engine/trim and market before using a value.
Documented itemOriginal source valueApplies to / source
G20 CBS oil-service scopeEngine oil and oil filter togetherBMW-authorized dealer 2025 G20 (330i) Condition Based Service reference; regional service scope, not an interval BMW dealer CBS oil-service sheet ↗

Still needs exact vehicle documentation

  • 2025 US engine-oil quantity: Confirm using exact US vehicle manual. 2025 330i or 330i xDrive, correct engine and VIN. No US refill quantity independently validated for this page. BMW USA digital owner's manual ↗
  • Engine-oil approval and viscosity: Check the VIN-matched manual. Do not infer an oil specification from G20 platform alone or from an older F30 engine. BMW USA digital owner's manual ↗

Maintenance context

  • Use the car's current service requirement. Read the remaining service requirement shown for your vehicle and distinguish an oil service from a brake-fluid or vehicle-check reminder. The dealer reference identifies G20 engine oil and oil-filter renewal as a combined oil-service task; it does not establish a fixed US mileage interval. BMW G20 CBS service scope ↗
  • Record the actual oil reference. For an oil change, document engine identity, manual edition, approved oil standard, filter reference, service date and final measured oil level. Do not assume xDrive shares all service quantities with a rear-wheel-drive vehicle simply because engine output matches. BMW USA owner manuals ↗

Warnings and safety

  • Low oil level is not an oil-service reminder. Read the exact Check Control wording. If the warning concerns engine oil pressure, stop safely and follow the manual's urgent instructions; do not treat it like a routine top-up or clear it with a service reset. BMW USA owner manuals ↗
  • xDrive symptom needs its own diagnosis. Record whether vibration, shudder or a driveline warning happens while turning, accelerating or braking. Save the precise message and ask for VIN-specific diagnosis before attributing it to a transfer case or purchasing a component. BMW USA owner manuals ↗

Parts identity (not fitment approval)

  • Match RWD versus xDrive. Before ordering an oil filter, wheel, brake part or driveline part, match the 17-character VIN and fitted options. BMW's official accessories store offers VIN compatibility checks. An engine-badge match by itself is not proof of fitment. Shop BMW USA VIN fitment ↗

Evidence limitation: No oil-capacity number, brake rotor size, filter SKU, transfer-case fluid or fault-code fix is published without US 2025 exact-engine manufacturer evidence.

For exact-chassis ownership data, use the published vehicle directory. Only vehicles with source-reviewed chassis facts appear there.

03 / Source and context

Original manufacturer documents

This page introduces a documented vehicle model family and a specific manufacturer edition. It is not a claim that all VINs or trims have identical service fills, batteries, tyres or fitment. An exact-generation maintenance fact must be reviewed independently before entering the chassis-linked catalog.

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