BMW Knowledge Base

Technical articles, diagnostic guides and deep dives into problem BMW components.

951 articles in the base · updated regularly

All Cooling System 22 OBD-II Diagnostics 34 Transmission 16 Buying Guide 60 Engine Mechanical 377 Car Overview 327 Maintenance 47 Suspension 1 Electrical System 24

Model:

All 3-er G20 3-er F30 5-er G30 5-er F10 5-er E60 X3 G01 X3 F25 X4 G02 X5 G05 X5 F15 7-er G11/G12

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BMW E60: The Complete Guide to Problems, Maintenance, and Buying the Legendary 5 Series

A complete guide to the BMW E60: common problems (oil leaks, iDrive glitches, cooling system), engine and automatic transmission maintenance, plus a buyer's checklist and tips for choosing a reliable example and staying ahead of trouble.

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BMW E53 X5: The Complete Owner’s Guide to Buying, Problems, and Maintenance

The complete BMW E53 X5 guide: choosing an engine, common problems, a pre-purchase checklist, and maintenance tips. Find out why this SUV became a legend—and how to extend its life.

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BMW E38: The Complete Guide to Buying, Maintenance, and Common Problems

A complete guide to buying and maintaining the BMW E38: common problems, the cooling system, a buyer's checklist, and tips for extending the car's life.

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BMW E34: The Complete Guide to Buying, Maintaining, and Repairing the Legendary 5 Series

A complete guide to buying, maintaining, and repairing the BMW E34. Engines, common problems, service intervals, and a buyer's checklist—plus advice on choosing one and budgeting for ownership of the legendary 5 Series.

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BMW E38: Complete Guide to Buying, Maintenance, and Common Problems

A complete guide to buying and maintaining the BMW E38 (1994–2001). Common M62 and M73 engine problems, the cooling system, a purchase checklist, and upgrade tips.

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BMW 1 Series F20: A Complete Guide to Engines, Problems, and Buying

A complete guide to the BMW 1 Series F20: engine overview (N13, N20, B38, B48, N55, B58), common problems, maintenance tips, and a buying checklist. Find out why post-facelift 2015 versions are considered the most reliable.

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BMW 2 Series G42: A Complete Breakdown of Engines, Problems, and Owner Secrets

A complete breakdown of BMW 2 Series G42 engines: B48, B58, S58, and B47. Typical problems, maintenance advice, and a checklist for buying used. Find out which engine to choose: the M240i, the M2, or the diesel.

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BMW E53 with the M54 3.0i: The Complete Ownership and Buying Guide

Complete guide to the BMW E53 with the M54 3.0i: specifications, common problems, maintenance tips, and a checklist for buying a used SUV. Find out why this version is considered the most reliable.

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BMW E46: Complete Guide to Buying, Owning, and Repairing

A complete guide to the BMW E46: the model range from 318d to 330i, typical body, suspension, engine, and transmission problems, maintenance advice, and a pre-purchase inspection checklist. How to pick a solid one and make it last.

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BMW E38: Why the “Classic 7 Series” Is an Investment in Driving Pleasure

The BMW E38 is the last “classic 7 Series” before the Bangle era. Its history, technical innovations, typical suspension and engine problems, the maintenance schedule, and a buyer's checklist. An investment in driving pleasure.