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BMW 3 Series G20 vs BMW M3 G80

BMW 3 Series

BMW 3 Series

G20 · 2018 – 2026

The seventh-generation 3 Series (G20), on the CLAR rear-wheel-drive platform.

VS
BMW M3

BMW M3

G80 · 2021 – 2026

The current M3 (G80), BMW’s high-performance saloon on the CLAR platform.

First car
Second car
Pick this one if…

BMW 3 Series

Pick the 3 Series for benchmark handling, efficient engines and a premium cabin in a compact executive sedan.

Best engine: The 320i (petrol) or 320d (diesel).
Read the full guide
Pick this one if…

BMW M3

Pick the G80 for the first M3 with optional M xDrive and a manual base variant — S58 pace with everyday saloon practicality.

Best engine: The M3 Competition (510 hp) — the sweet spot.
Read the full guide

Performance

B48 320i · Petrol vs M3 Competition · Petrol

BMW 3 Series BMW M3
Power
184 hp
510 hp Winner
Torque
300 Nm
650 Nm Winner
0–100 km/h
7,1 s
3,9 s Winner
Top speed
240 km/h
250 km/h Winner
Power-to-weight
125,2 hp/t
286,5 hp/t Winner
CO₂ emissions (WLTP)
134 g/km Winner
230 g/km
Consumption (WLTP)
5,9 L/100km Winner
10,5 L/100km

Dimensions & space

BMW 3 Series BMW M3
Boot
480 L
480 L
Boot (seats folded)
—
1.200 L
Wheelbase
2,85 m
2,86 m Winner
Length
4,71 m
4,79 m
Ground clearance
14,4 cm
12,0 cm
Turning circle
11,4 m Winner
12,2 m
Towing capacity (braked)
1.600 kg Winner
0 kg

Powertrain & tech

BMW 3 Series BMW M3
Platform CLAR (rear-wheel-drive base) CLAR (G80, rear-wheel drive or xDrive)
Drive Rear-wheel drive · All-wheel drive Rear-wheel drive · All-wheel drive
Engine family B48 2.0 · B58 3.0 · B47 2.0 diesel · 330e PHEV S58 3.0 twin-turbo petrol
Transmission 8-speed automatic 8-speed automatic
Fuel Petrol Petrol
Euro standard Euro 6d-TEMP Euro 6d
LEZ access Unrestricted access (compliant under current legislation) Unrestricted access (compliant under current legislation)

Reliability & watch-outs

Known issues

BMW 3 Series
  • EGR cooler can leak on B47 diesels
  • Transfer case (xDrive) judder on early cars
  • Adaptive dampers need checking at high mileage
BMW M3
  • Cooling-system plastics and electric water pump
  • Oil-cooler or seal sweating (early cars)
  • Carbon buildup on intake valves (direct injection)

Pros

BMW 3 Series
  • Sharp handling from rear-wheel drive
  • Big boot & roomy rear seat
  • Strong, efficient B-series engines
BMW M3
  • Rear-wheel drive retains classic M balance
  • xDrive versions are quicker and more secure in poor grip
  • Usable rear seats and a 480 L boot for a performance saloon

Cons

BMW 3 Series
  • Firm ride on M Sport (run-flat)
  • Pricier than most rivals
BMW M3
  • Big and heavy (~1,705–1,940 kg)
  • Firm ride, especially in stiffer settings

Driving experience

BMW 3 Series

Precise, balanced and still the class benchmark to drive. Steering is quick, accurate and communicative, body control taut, and the rear-drive chassis stays planted yet adjustable through bends. sDrive keeps the classic 3 Series balance and a hint of playfulness; xDrive adds all-weather grip without dulling the nose. The optional adaptive M suspension spans comfortable to firmly controlled. The B48/B58 petrols are smooth and free-revving, the B47/B57 diesels pull strongly and stay refined, and the 320e/330e plug-in hybrids glide silently on electric power. The ZF 8-speed is quick and seamless; the early manual is a rare, engaging treat. Overall a poised sports saloon that blends sharp dynamics with everyday comfort.

BMW M3

Powerful, refined and highly capable. Steering is precise, body control is excellent and the car feels planted and engaging. Rear-drive versions retain classic M balance and playfulness; xDrive versions are more neutral, secure and quicker off the line. Adaptive M suspension offers a wide range between firm and acceptable comfort. The S58 is strong, free-revving and characterful with excellent mid-range and high-rev performance. The manual (base) is engaging; the ZF 8-speed (Competition) is quick and smooth. Overall a highly versatile high-performance saloon that balances dynamics with everyday usability better than many predecessors.

Belgian taxes & LEZ

Region
Fuel
Euro norm
First registration
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For sale at dealers