r/MechanicAdvice

2.0M members
r/MechanicAdvice is a subreddit with 2.0M members. The most common kinds of discussions are solution requests and advice requests, and the community frequently discusses noise, engine, oil, struggle, and transmission, and they frequently recommend/review tool brand, obd2 scanner, and impact wrench.
This is more than a car repair forum! Please read and follow the posting rules listed in the right hand sidebar.

Popular Themes in r/MechanicAdvice

#1
Solution Requests
: "Cut into the hub when removing bearing race, still usable?"
23 posts
#2
Advice Requests
: "Bought a used car w 152k miles, what 150k maintenamce to DIY vs pay a shop"
20 posts
#3
Pain & Anger
: "Start Engine / Bad Noise Jeep Cherokee Limited 2015 2.4"
4 posts
#4
Money Talk
: "2017 Nissan Rogue, 114k mi. Is $2,300 fair for inner tie rod replacement? Failed inspection at my local dealership today and this is what they quoted me."
1 post

Popular Topics in r/MechanicAdvice

#1

Noise

: "Rattling Noise in my engine after I changed oil"
58 posts
#2

Engine

: "Rattling noise in my Engine after I changed oil"
38 posts
#3

Oil

: "How often should i change my Oil, getting different answers from everyone"
21 posts
#4

Struggle

20 posts
#5

Transmission

: "CVT Transmission Fluid change"
16 posts
#6

Ac

: "2008 honda civic Ac issues"
14 posts
#7

Coolant

: "Straw from air can fell into Coolant jacket"
13 posts
#8

Brake

: "Changing Brake hose , stripped threads?"
12 posts
#9

Mechanic

: "Motorcycle Mechanic Nightmare"
11 posts
#10

Leak

: "Brake fluid Leak that no shop can find"
11 posts

Products Discussed in r/MechanicAdvice

Tool Brand

117 reviews
#1
Craftsman
4.5 from 17 reviews
#2
Gearwrench
4.1 from 14 reviews
#3
Harbor Freight
3.9 from 13 reviews

Obd2 Scanner

38 reviews
#1
Autel
4.1 from 7 reviews
#2
BlueDriver
3.7 from 3 reviews
#3
Xtool
5.0 from 2 reviews

Impact Wrench

33 reviews
#1
Milwaukee
4.8 from 19 reviews
#2
Ryobi
4.3 from 4 reviews
#3
Ridgid
4.0 from 1 review

Flair Used in r/MechanicAdvice

#1
Solved
: "Two stage Coilover"
2 posts
#2
Meta
: "Bypass aircon pulley on VW polo 1.2 petrol 2007 engine code BME"
1 post
#3
Question
: "1990 integra crank no start"
1 post

Member Growth in r/MechanicAdvice

Yearly
+319k members(18.5%)

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About

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Last updated: June 20, 2026