BMW 3 Series vs BMW 4 Series Gran Coupé

A proper head-to-head in South Africa — compare price, performance, fuel economy or electric range, safety and the details that shape long-term ownership.

BMW 3 Series in South Africa

BMW 3 Series

M340i xDrive Sedan Petrol 8-Speed Automatic Current
ZAR 1,362,500 ex-showroom
⚡ 285 kW 🔧 500 Nm ⛽ 12.5 km/l
VS
BMW 4 Series Gran Coupé in South Africa

BMW 4 Series Gran Coupé

M440i xDrive Gran Coupé Petrol 8-Speed Automatic Current
ZAR 1,497,500 ex-showroom
⚡ 285 kW 🔧 500 Nm ⛽ 12.5 km/l
+ Add a 3rd car

Decision summary

BMW 3 Series vs BMW 4 Series Gran Coupé: the short answer

3 Series and 4 Series Gran Coupé are close on the comparable published fields, so buyer priorities should decide.

3 Series starts ZAR 85,000 cheaper 3 Series from ZAR 911,500 · 4 Series Gran Coupé from ZAR 996,500

Five key differences

Exact selected derivatives
Specification 3 Series 4 Series Gran Coupé
Maximum Power 3 Series285 kW 4 Series Gran Coupé285 kW @ 5800-6500 rpm
Maximum Torque 3 Series500 Nm @ 1800-5000 rpm 4 Series Gran Coupé500 Nm @ 1800-5000 rpm
Engine Size 3 Series2998 cc 4 Series Gran Coupé2998 cc
Combined Fuel Economy 3 Series12.5 km/l 4 Series Gran Coupé12.5 km/l
Ground Clearance 3 Series140 mm 4 Series Gran Coupé140 mm

Strongest published figure in that row; no road-test winner is implied.

What Each Car Gets Right (and Wrong)

Specification evidence leader

3 Series

Strengths
  • Stronger published practicality figures
Weak Spots
  • No obvious weak spots to flag.
Best suited to: Published Practicality

4 Series Gran Coupé

Strengths
  • Nothing stands out clearly here.
Weak Spots
  • Lower published practicality figures
Best suited to: General Use

Which One's Right for You?

3 Series

  • Buyers prioritising the stronger published space and capacity figures

4 Series Gran Coupé

  • Buyers who prefer this derivative's confirmed specification mix

Full Specs, Side by Side

Spec 3 Series 4 Series Gran Coupé
Model Introduced Year 2019 2021
Generation Seventh-generation G20 BMW 3 Series Sedan, with regular 320i, 320d and 330i derivatives and an M340i xDrive M Performance flagship. G26 four-door Gran Coupé with frameless-door styling and a rear liftback.
Facelift History The seventh-generation G20 has received successive design and interior updates; the current South African page reflects the latest local specification. Current updated G26-generation BMW 4 Series Gran Coupé offered in South Africa; exact equipment follows derivative and production build.
Facelift Launched Since Original current-generation version Original current-generation version
Facelift Version Ending Current Current
Body Style Sedan Sedan
Model Year 2026 2026
Production Status active active
Segment Premium Sedan Premium Sedan
Vehicle Type Car Car
Spec 3 Series 4 Series Gran Coupé
Length 4714 mm 1 mm
Width 1827 mm 1 mm
Height 1440 mm 1 mm
Wheelbase 2851 mm 1 mm
Ground Clearance (Default) 140 mm 140 mm
Ground Clearance (With Full Seating Load) 125 mm 125 mm
Fuel Tank Capacity 59 l 50 l
Boot/Cargo Space 480 l 485 l
Kerb Weight 1770 kg 1543 kg
Gross Vehicle Weight (GVW) 2245 kg 2045 kg
Payload Capacity 550 kg 460 kg
Towing Capacity 1800 kg 1600 kg
Seating Capacity 5 seats 1 seats
Number of Rows 2 rows 2 rows
Doors 4 doors 4 doors
Minimum Turning Radius 5.6 m 5.6 m
Front Headroom 990 mm 998 mm
Rear Headroom 951 mm 943 mm
Front Legroom 1040 mm 1044 mm
Rear Legroom 900 mm 886 mm

In depth: how these cars differ

This 3 Series and 4 Series Gran Coupé comparison uses the exact derivatives selected above for South Africa. The catalogue index covers performance, efficiency, safety equipment, practicality and ownership cover only where comparable source-backed fields are present.

Performance index: 3 Series 97 vs 4 Series Gran Coupé 97.

Efficiency index: 3 Series 49 vs 4 Series Gran Coupé 49.

Safety-equipment index: 3 Series 92 vs 4 Series Gran Coupé 92.

Practicality index: 3 Series 62 vs 4 Series Gran Coupé 48.

Ownership-cover index: 3 Series not separately scored vs 4 Series Gran Coupé not separately scored.

These figures are Hagalu catalogue-comparison indicators, not customer ratings, crash-test scores, resale guarantees or a substitute for a road test. Each page shows its weighted source coverage beside the result.

Specification Evidence Index

A transparent comparison of published catalogue fields. This is not a road-test score, owner rating or editorial review rating, and it appears only when every vehicle clears the same comparable-data threshold.

Evidence / 100
Evidence-index readout

3 Series leads by 4 points

3 Series and 4 Series Gran Coupé are close on the comparable published fields, so buyer priorities should decide.

Evidence leader 77 /100
Lead 4 points
Data 83% source coverage
77
#1 Evidence leader

3 Series

83% source coverage 2 strong categories
Best at Performance 97 Check Efficiency 49
Performance 97
Efficiency 49
Safety 92
Practicality 62
Leads by 4 points
73
#2

4 Series Gran Coupé

83% source coverage 2 strong categories
Best at Performance 97 Check Practicality 48
Performance 97
Efficiency 49
Safety 92
Practicality 48
Performance 24% Safety 22% Practicality 22% Efficiency 17% Ownership 15%
Category leaders What moves the verdict
Performance Level Efficiency Level Safety Level Practicality 3 Series +14

Close catalogue match. Buyer priorities should decide the outcome.

Why this score View full breakdown
Evidence-index leader

3 Series

Performance 97/100
Efficiency 49/100
Safety 92/100
Practicality 62/100

4 Series Gran Coupé

Performance 97/100
Efficiency 49/100
Safety 92/100
Practicality 48/100

What the evidence means

Evidence index BMW 3 Series leads the specification evidence index with 77 pts vs 73 pts for 4 Series Gran Coupé

In Hagalu's specification evidence index, 3 Series leads. However, 4 Series Gran Coupé may suit buyers prioritising different confirmed fields. Ultimately, the right choice depends on your driving priorities in South Africa.

3 Series vs 4 Series Gran Coupé questions

There is no universal winner. Use the comparison table to match the models and available derivatives in South Africa on price, safety equipment, space, powertrain and ownership cover. The category indicators summarise published catalogue data; they are not a road test or customer rating.

Compare the published consumption or mileage rows for the exact derivatives using the same unit and test basis. A catalogue figure is useful for like-for-like comparison, but traffic, speed, load, weather and driving style can change actual fuel use.

Compare only equipment explicitly listed for each derivative, including airbags, stability control and driver-assistance systems. Confirm the exact trim with the manufacturer, and treat any independent crash-test result separately because equipment and ratings can differ by market.

A reliable five-year total cannot be calculated from catalogue data alone. Add the exact purchase and finance cost, fuel or electricity, insurance quotes, scheduled servicing, tyres and expected resale value. Check whether the selected derivative includes a service or maintenance plan.

Use the seating, boot or load-space, ISOFIX and safety rows as a first check. Then test the exact cars with your child seats, passengers and typical luggage, because published dimensions do not show every access or comfort difference.

Compare the published power, torque and 0–100 km/h rows when they are available for both exact derivatives. Vehicle weight, gearing and power delivery also matter, so catalogue outputs alone do not establish real-world overtaking or response.