r/AskMechanics is a subreddit with 467k members. The most common kinds of discussions are solution requests and advice requests, and the community frequently discusses car, noise, starting, engine, and looking for, and they frequently recommend/review windshield wipers, obd2 scanner, and scanner.
Popular Themes in r/AskMechanics
#1
Solution Requests
: "Engine knocking when I first accelerate. What could cause this?"
13 posts
#2
Advice Requests
: "2025 Nissan Sentra SV – Rear rotor grinding issue at 32,000 km. Is this normal?"
2 posts
#3
Pain & Anger
: "Sister hit something driving back home on Saturday and cracked her oil pan but kept driving it even after the oil light started flashing. This is after JB welding the pan and adding new oil/replacing the filter. Im pretty sure I know the answer but how screwed is she?"
1 post
Popular Topics in r/AskMechanics
#1
Car
34 posts
#2
Noise
: "Noise near serpentine belt (pully?)"
32 posts
#3
Starting
: "Help won’t start 🥲"
26 posts
#4
Engine
: "HONDA ROD KNOCK?!??"
25 posts
#5
Looking For
22 posts
#6
Battery
: "Battery positive terminal has two bolt shanks but only 1 nut. Is this normal?"
21 posts
#7
Overheating
: "If a car overheats again five days after a repair, the original problem probably wasn't fully resolved"
20 posts
#8
Coil
: "corroded contacts and spring ignition Coil"
20 posts
#9
Recall
: "Ford Recall question"
20 posts
#10
Tires
: "Can I fit 18x9 -12 rims with 31"x11" Tires on my truck with NO suspension modifications?"
20 posts
Products Discussed in r/AskMechanics
Windshield Wipers
20 reviews
#1
Bosch
4.4★ from 11 reviews
#2
Rain-X
4.8★ from 4 reviews
#3
Valeo
5.0★ from 1 review
Obd2 Scanner
17 reviews
#1
BlueDriver
4.0★ from 3 reviews
#2
ANCEL
4.0★ from 1 review
#3
Elm327
4.0★ from 1 review
Scanner
9 reviews
#1
Autel
4.0★ from 2 reviews
#2
Car Scanner
4.0★ from 1 review
#3
Forscan
4.0★ from 1 review
Flair Used in r/AskMechanics
#1
Question (Serious Replies Only)
: "Towel sucked into Turbo"
93 posts
#2
Discussion
: "HONDA ROD KNOCK?!??"
4 posts
Member Growth in r/AskMechanics
Yearly
+103k members(28.2%)
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About
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Last updated: October 28, 2026