The Lemon Index
Head to head
Each car's headline trim of its newest generation. Green check = the better of the two on that line (more power, quicker, lighter, cheaper, fewer recalls).
BMW M340i / 340i
G20 M340i · 2020–
G20 M340i · 2020–
BMW M3
G80 M3 Competition · 2021–2025
G80 M3 Competition · 2021–2025
Horsepower
382
503
Torque
lb-ft
lb-ft
369
479
0–60 mph
seconds; magazine test, else maker
seconds; magazine test, else maker
3.8
3.5
Top speed
130 mph
155 mph
Weight
3,849 lb
3,890 lb
Price new
base, when new
base, when new
$54,000
$72,800
Engine
BMW B58
3.0-liter inline-6, turbo
3.0-liter inline-6, turbo
BMW S58
3.0-liter inline-6, twin-turbo
3.0-liter inline-6, twin-turbo
YouTube owner tone
out of 100, these years
out of 100, these years
63
60
Owner complaints
NHTSA, raw count, these years
NHTSA, raw count, these years
80
7
Recalls
these years
these years
14
4
Owner complaints are raw counts from NHTSA, not per car sold: performance cars sell too few for a fair per-car score, and the busier seller usually draws more. YouTube owner tone = how positively the most-watched videos about those model years talk about the car (100 = all praise).
Pick other generations or add a car
Every generation
BMW M340i / 340i
| Generation | Trim | hp | 0–60 | Engine | YouTube tone | Complaints | Recalls |
|---|---|---|---|---|---|---|---|
| G20 · 2020– | M340i | 382 | 3.8 | BMW B58 | 63 | 80 | 14 |
| F30 · 2016–2018 | 340i | 320 | 4.8 | BMW B58 | 53 | 14 | 0 |
BMW M3
| Generation | Trim | hp | 0–60 | Engine | YouTube tone | Complaints | Recalls |
|---|---|---|---|---|---|---|---|
| G80 · 2021–2025 | M3 Competition | 503 | 3.5 | BMW S58 | 60 | 7 | 4 |
| F80 · 2015–2018 | M3 | 425 | 3.8 | BMW S55 | 55 | 21 | 4 |
| E9x · 2008–2013 | M3 | 414 | 4.3 | BMW S65 | 53 | 202 | 5 |
| E46 · 2001–2006 | M3 | 333 | 4.5 | BMW S54 | 53 | 165 | 9 |
Everything on the BMW M340i / 340i · Everything on the BMW M3 · Specs and their sources are on each car's page.