: Supports diagnostics for 47 car brands and 37 truck/heavy-duty vehicle brands from major global manufacturers. Intelligent System Scan (ISS)

Delphi Autocom 2021.11 C4b is a professional-grade vehicle diagnostic software designed for workshops to perform comprehensive scans, coding, and adjustments on both cars and trucks

: High-quality single-board units offer broader compatibility with difficult brands like BMW and older pre-2010 vehicles that cheaper double-board (2-PCB) versions often struggle with.

While newer versions exist (2023, 2024), the 2021.11 release is considered the "stable king." Many users report that later versions introduce bugs for older ECUs or require constant internet handshakes. Version 2021.11 provides mature support for 2015-2021 vehicles without the bloatware of newer subscription models.