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

Car Overview Overview

BMW 320d G20 (B47): Long-Term Ownership and Real-World Reliability

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Car Overview Overview

BMW 3 Series G20 320d: Overview, Ownership Experience, and Common Problems

Car Overview Overview

BMW X5 G05 40i: Reliability and Long-Term Ownership Experience

Buying Guide Overview

BMW X5 G05 40i: Buying Guide—Should You Buy One? Tips and Common Problems

The used BMW X5 G05 40i pairs the sturdy B58 inline-six with xDrive and an 8-speed Steptronic automatic. What to check before buying: cooling system, brakes, air suspension, electronics, and service history.

Car Overview Overview

BMW 530d G30 (B57): Diesel 5 Series Reliability Review

Buying Guide Overview

BMW 5 Series G30 530d Buyer’s Guide: What to Check Before Buying—and Whether It’s Worth It

Car Overview Overview

BMW 5 Series G30 520d: Owner Experience and Long-Term Reliability

Buying Guide Overview

BMW 520d G30 (2017–2023) Buyer’s Guide: Should You Buy One, Weak Spots, Pre-Purchase Checks

Car Overview Overview

BMW 5 Series G30 520d (B47): Overview, Reliability, and Ownership Experience

Car Overview Overview

BMW Knowledge Base

BMW 320d G20 (B47): Long-Term Ownership and Real-World Reliability

BMW 3 Series G20 320d: Overview, Ownership Experience, and Common Problems

BMW X5 G05 40i: Reliability and Long-Term Ownership Experience

BMW X5 G05 40i: Buying Guide—Should You Buy One? Tips and Common Problems

BMW 530d G30 (B57): Diesel 5 Series Reliability Review

BMW 5 Series G30 530d Buyer’s Guide: What to Check Before Buying—and Whether It’s Worth It

BMW 5 Series G30 520d: Owner Experience and Long-Term Reliability

BMW 520d G30 (2017–2023) Buyer’s Guide: Should You Buy One, Weak Spots, Pre-Purchase Checks

BMW 5 Series G30 520d (B47): Overview, Reliability, and Ownership Experience

BMW 5 Series G30 520d (B47): Reliability Overview and Owner Experience