r/Diesel↗
/r/Diesel: For Diesel Enthusiasts
Welcome to /r/Diesel, reddit's home for everything about compression motors!
121k subscribers487 posts / mo in Sep 2026 (incl. <1% by known bots)404 authors / mosince 2009
r/Diesel has 121k members (+16% over the last 12 months). It gets about 487 posts a month from 404 people. Top topics: Diesel Trucks, Transmission Issues and Buying Advice.
When to post on r/Diesel
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How r/Diesel has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/Diesel
Top topics
Share of the subreddit's posts
- Diesel Trucks18%
- Transmission Issues3.4%
- Buying Advice3.2%
- Diesel Trucks2.9%
- Gas & Fuel2.6%
Brands people mention
Most-mentioned brands and sites, last 12 months
- The Drive
- Ford Trucks
- US EPA
- American Automobile Association
- ScienceDirect
Everything else about r/Diesel
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research