Model family

BMW 3 Series

Choose an exact chassis or model code to open source-backed specifications, service capacities, batteries, tires, maintenance and ownership data.

2 exact codes · 30 published facts
Published configuration references

Choose the market, engine and transmission

Compare manufacturer-backed reference configurations with source-linked specifications and owner resources. Match the cited market and edition; a shared model name does not make specifications interchangeable.

Manufacturer evidence · United States

3 Series generations & family tree

Follow the model history, then choose an exact chassis. Dates describe the cited market period, refresh or launch event; they are not global production dates. Shared family membership does not establish parts compatibility.

  1. US MY2025 refresh · US production from August 2024

    Seventh generation · G20

    A refresh within the seventh generation, not a new generation. Existing profile labels combine platform, trim, model year and market; they are not VIN identifiers.

    Manufacturer evidence

    Code mapping: BMW · US MY2025 3 Series release and technical data. Only existing published chassis pages are linked.

    Sources checked 31 October 2026.

This is a curated family tree. Unmapped codes remain available in the existing catalogue below; missing links do not mean a variant did not exist.

Exact engineering reference

BMW 3 Series: specifications by chassis

One model name can cover different engines, grades and equipment. Compare the exact published answer for each chassis instead of applying a generic model-wide specification.

1 documented questions
BMW 3 Series: specifications by chassis. Every linked fact identifies its original source; a blank cell means no qualifying answer is published.
Owner questionG20 330i RWD MY2025 US2025G20 330i xDrive MY2025 US2025
Tyre & wheel sizesWhat factory tyre and wheel sizes?225/45 R18 front and rearBMW Group ↗225/45 R18 front and rearBMW Group ↗

Each linked value opens its own manufacturer source, verification date and applicability notes. Catalog year ranges do not guarantee identical equipment in every market.

Source-backed chassis differences

Compare exact 3 Series codes.

These comparisons share enough verified topics to show useful differences, rather than relying on a common model name.

G20 330i RWD MY2025 US vs G20 330i xDrive MY2025 US15 comparable facts · 5 documented answers differ

3 Series chassis / model codes

Common 3 Series ownership topics

Topic hubEngine specificationsTopic hubTyre & wheel sizes

Popular reference facts

G20 330i RWD MY2025 US · Engine designationB48B20O2G20 330i RWD MY2025 US · Engine maximum power255 hp @ 4,700–6,500 rpmG20 330i xDrive MY2025 US · Engine designationB48B20O2G20 330i xDrive MY2025 US · Engine maximum power255 hp @ 4,700–6,500 rpm