r/CarHacking is a subreddit with 45k members. The community frequently discusses can bus, can, obd, obd2, and ecu, and they frequently recommend/review oscilloscope, scanner, and obd2 scanner, and the most common flair used is original project , can, cool project find, scan tool, and community.
Car Hacking - The ECU and protocols like CANbus have become the heart and brain of most modern cars, but it has also become a locked down black box. This is a place for people interested in taking back control of the car they bought. New age hot rodders, ECOmodders, Security researchers, the curious, the paranoid, and the tinkerers are all welcome. We encourage the use of open source solutions and tools like arduino and rasberry pi.
Popular Topics in r/CarHacking
#1
Can Bus
35 posts
#2
Can
16 posts
#3
Obd
8 posts
#4
Obd2
7 posts
#5
Ecu
6 posts
#6
Infotainment
4 posts
#7
Esp32
4 posts
#8
Ford
4 posts
#9
Xentry
4 posts
#10
Coding
3 posts
Products Discussed in r/CarHacking
Oscilloscope
3 reviews
#1
FNIRSI 1013D
4.0★ from 1 review
#2
Hantek
4.0★ from 1 review
#3
Siglent SDS1000X-E
5.0★ from 1 review
Scanner
2 reviews
#1
Tactrix
4.0★ from 1 review
#2
OBDLink
4.0★ from 1 review
Obd2 Scanner
2 reviews
#1
Tactrix
4.0★ from 1 review
#2
OBDLink
4.0★ from 1 review
Flair Used in r/CarHacking
#1
Original Project
: "I built a custom head unit for my car"
87 posts
#2
CAN
: "Wolkswagen coding"
38 posts
#3
Cool Project Find
: "2016 Mercedes C300 (W205) broadcasts VIN in plaintext on CAN 0x071 — no UDS needed"
17 posts
#4
Scan Tool
: "CANgaroo v0.4.5 released – Linux CAN analyzer with real-time signal visualization (charts, gauges, text)"
14 posts
#5
Community
: "How I’ve been using topdon for diy diagnostics and light car hacking"
13 posts
#6
Article/news
: "Torque Pro for Windows" on GitHub is an Info-Stealer Malware! Do Not Download!"
5 posts
#7
ELM327
: "Is this OBD reader good enough for personal use?"
5 posts
#8
Tuning
: "How do ECU tool companies reverse engineer secure modern ECUs?"
5 posts
#9
Multiple
: "Android auto in older Volvo FH?"
4 posts
#10
No Protocol
: "AES CMAC Key search"
2 posts
Member Growth in r/CarHacking
Yearly
+13k members(39.2%)
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Last updated: July 1, 2026