Top Cars & Trucks subreddits

Largest Cars & Trucks subreddits

Largest Cars & Trucks subreddits

#	Subreddit	Members	12-mo growth	Commenters / mo
1	r/cars	7.44M	+1.0%	9,702
2	I r/IdiotsInCars	4.07M	+0.9%	10,583
3	r/teslamotors	3.46M	+1.1%	2,978
4	r/vandwellers	3.01M	+1.0%	2,082
5	r/Roadcam	2.25M	+1.6%	6,242
6	r/Justrolledintotheshop	2.2M	+2.5%	11,505
7	M r/MechanicAdvice	2.16M	+13%	22,951
8	r/carporn	1.73M	+1.4%	943
9	r/Shitty_Car_Mods	1.35M	+1.4%	2,929
10	A r/Autos	1.04M	+1.6%	1,270
11	r/AutoDetailing	934,503	+5.6%	4,089
12	r/Cartalk	896,016	+6.9%	12,551
13	A r/AwesomeCarMods	868,365	+1.2%	725
14	W r/whatcarshouldIbuy	804,923	+18%	27,294
15	r/CarsIndia	769,124	+21%	24,228
16	r/CarTalkUK	687,452	+12%	17,829
17	r/BMW	644,988	+15%	14,920
18	r/dashcamgifs	513,135	+3.5%	570
19	r/dashcams	497,550	+92%	48,358
20	r/garageporn	494,509	+9.1%	1,840
21	r/AskMechanics	464,704	+28%	18,318
22	r/electricvehicles	449,424	+20%	15,040
23	r/classiccars	424,508	+9.1%	4,357
24	r/Porsche	419,643	+14%	6,274
25	r/RoastMyCar	388,676	+3.6%	4,285

Fastest growing Cars & Trucks subreddits

Member growth over 12 months, among subreddits that had at least 18,251 members a year ago.

Fastest growing Cars & Trucks subreddits

#	Subreddit	12-mo growth	Members gained	Members	Commenters / mo
1	r/TeslaFSD	+166%	+32,103	51,471	6,833
2	r/G37	+145%	+36,194	61,097	1,622
3	r/carmodification	+110%	+39,120	74,840	909
4	r/oldcars	+107%	+20,832	40,320	621
5	r/TeslaSupport	+99%	+18,469	37,034	4,238
6	C r/carbuying	+99%	+28,569	57,457	4,567
7	r/dashcams	+92%	+238,797	497,550	48,358
8	C r/classictrucks	+81%	+28,431	63,662	343
9	r/Dashcamindia	+76%	+13,829	32,080	647
10	r/electriccars	+75%	+18,324	42,605	5,099
11	r/RatRod	+71%	+13,533	32,469	156
12	r/waymo	+63%	+13,260	34,348	2,358
13	r/BYD	+63%	+12,830	33,338	1,224
14	r/BMWX5	+60%	+14,151	37,557	3,122
15	r/driving	+59%	+39,676	106,610	15,385
16	U r/UsedCars	+58%	+33,713	91,870	5,854
17	W r/Wheels	+55%	+11,824	33,337	1,654
18	r/tires	+55%	+40,716	114,844	14,719
19	r/carIndia	+52%	+29,852	87,617	5,714
20	r/carspotting	+52%	+29,663	87,150	2,363
21	r/koenigsegg	+51%	+10,069	29,655	276
22	r/CX50	+51%	+9,791	29,041	2,040
23	r/CarHacking	+50%	+17,560	52,631	512
24	C r/Camper	+50%	+9,386	28,135	491
25	C r/carquestions	+49%	+9,032	27,491	1,370

Most members gained

Cars & Trucks subreddits that gained the most members

#	Subreddit	Members gained	12-mo growth	Members	Commenters / mo
1	M r/MechanicAdvice	+243,935	+13%	2.16M	22,951
2	r/dashcams	+238,797	+92%	497,550	48,358
3	r/CarsIndia	+135,316	+21%	769,124	24,228
4	W r/whatcarshouldIbuy	+121,011	+18%	804,923	27,294
5	r/AskMechanics	+101,040	+28%	464,704	18,318
6	r/BMW	+82,759	+15%	644,988	14,920
7	r/cars	+76,264	+1.0%	7.44M	9,702
8	r/electricvehicles	+75,547	+20%	449,424	15,040
9	r/CarTalkUK	+74,146	+12%	687,452	17,829
10	A r/askcarguys	+71,147	+30%	308,993	20,160
11	r/whatisthiscar	+64,227	+21%	372,971	13,286
12	r/IdiotsTowingThings	+63,811	+47%	199,382	6,865
13	r/drivingUK	+60,927	+49%	186,432	18,429
14	r/Audi	+58,931	+19%	373,093	11,245
15	r/TeslaLounge	+58,446	+28%	270,665	9,524
16	r/Cartalk	+57,794	+6.9%	896,016	12,551
17	r/Justrolledintotheshop	+54,597	+2.5%	2.2M	11,505
18	V r/VanLife	+52,420	+18%	349,022	3,288
19	r/Porsche	+52,212	+14%	419,643	6,274
20	r/LICENSEPLATES	+50,114	+40%	176,587	14,720
21	r/AutoDetailing	+49,152	+5.6%	934,503	4,089
22	r/TeslaModelY	+47,231	+24%	247,479	7,921
23	r/mercedes_benz	+44,084	+18%	289,569	7,509
24	r/AskAMechanic	+41,349	+30%	178,535	7,012
25	r/garageporn	+41,075	+9.1%	494,509	1,840

Most active Cars & Trucks subreddits

People who comment in a month, the average of the three months ending September 2026.

Most active Cars & Trucks subreddits

#	Subreddit	Commenters / mo	Posts / mo	Members
1	r/dashcams	48,358	1,457	497,550
2	W r/whatcarshouldIbuy	27,294	4,625	804,923
3	r/CarsIndia	24,228	7,017	769,124
4	M r/MechanicAdvice	22,951	8,931	2.16M
5	A r/askcarguys	20,160	2,152	308,993
6	r/drivingUK	18,429	1,239	186,432
7	r/AskMechanics	18,318	6,027	464,704
8	r/CarTalkUK	17,829	2,737	687,452
9	r/driving	15,385	1,316	106,610
10	r/electricvehicles	15,040	1,137	449,424
11	r/BMW	14,920	2,703	644,988
12	r/LICENSEPLATES	14,720	3,572	176,587
13	r/tires	14,719	1,642	114,844
14	r/whatisthiscar	13,286	1,800	372,971
15	A r/AskAShittyMechanic	12,938	525	186,261
16	r/Cartalk	12,551	1,204	896,016
17	r/Justrolledintotheshop	11,505	542	2.2M
18	r/Audi	11,245	2,210	373,093
19	r/carscirclejerk	11,074	1,014	209,938
20	I r/IdiotsInCars	10,583	560	4.07M
21	r/cars	9,702	933	7.44M
22	r/TeslaLounge	9,524	741	270,665
23	r/Miata	8,685	2,033	253,545
24	r/TeslaModelY	7,921	1,731	247,479
25	r/CarsAustralia	7,871	1,160	309,978

More in Vehicles

• Top Motorcycles subreddits
• Top Aviation subreddits
• Top Trains & Public Transportation subreddits
• Top Boating & Sailing subreddits
• All topics

How these lists are made

• Members are the member counts measured in October 2026.
• Activity (commenters and posts per month) is the average of the three months ending September 2026. Posts by known bots are not counted.
• 12-month growth compares members now with members a year earlier. A subreddit is ranked by growth only if it already had at least 18,251 members a year ago (the median for subreddits with a known growth), so brand-new communities don't top the list from a base of zero. Subreddits with more monthly active users than 0.808 per member, a sign of inflated activity, are left out of the growth and activity lists.
• NSFW communities are excluded: those Reddit marks as 18+, those where most posts are NSFW, and the Adult Content topic.
• Topics follow Reddit's own community categories.
• The lists are rebuilt every month. Each list shows the top 25 (100 for the largest subreddits overall). Download all lists as CSV (free to reuse under CC BY 4.0, with a link to this page).