BYD SEALION 7 vs BMW X4

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.

BYD SEALION 7 in South Africa

BYD SEALION 7

Performance EV AWD 4.5S Electric Single-Speed Reduction Gear Current
ZAR 1,319,900 ex-showroom
⚡ 390 kW 🔧 690 Nm
VS
BMW X4 in South Africa

BMW X4

M40i Petrol 8-Speed Automatic Current
ZAR 1,600,000 ex-showroom
⚡ 285 kW 🔧 500 Nm ⛽ 12.5 km/l
＋ Add a 3rd car

Decision summary

BYD SEALION 7 vs BMW X4: the short answer

SEALION 7 has a modest catalogue-index lead, while X4 remains close.

SEALION 7 starts ZAR 90,100 cheaper SEALION 7 from ZAR 1,109,900 · X4 from ZAR 1,200,000

Five key differences

Exact selected derivatives
Specification SEALION 7 X4
Maximum Power SEALION 7390 kW X4285 kW
Maximum Torque SEALION 7690 Nm X4500 Nm
Engine Size SEALION 7Not Applicable X42998 cc
Combined Fuel Economy SEALION 7Not Applicable X412.5 km/l
Ground Clearance SEALION 7163 mm X4140 mm

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

What Each Car Gets Right (and Wrong)

Specification evidence leader

SEALION 7

Strengths
  • More powerful engine output
  • Better fuel efficiency
  • Stronger listed safety equipment
  • Stronger published practicality figures
Weak Spots
  • No obvious weak spots to flag.
Best suited to: Published Performance Published Efficiency Published Practicality

X4

Strengths
  • Nothing stands out clearly here.
Weak Spots
  • Less powerful engine setup
  • Lower fuel efficiency
  • Fewer listed safety features
  • Lower published practicality figures
Best suited to: General Use

Which One's Right for You?

SEALION 7

  • Buyers prioritising the stronger published powertrain figures
  • Buyers prioritising the lower published fuel or energy use
  • Buyers prioritising the more complete listed safety equipment
  • Buyers prioritising the stronger published space and capacity figures

X4

  • Buyers who prefer this derivative's confirmed specification mix

Full Specs, Side by Side

Spec SEALION 7 X4
Model Introduced Year 2025 2018
Generation First South African SEALION 7 generation Five-door coupé-style SUV from the established X4 generation, separate from X3 and without a current full-M derivative.
Facelift History No separately marketed South African facelift announced as at August 2026 Current South African X4 listing retained on BMW’s live range; current exact identities are xDrive20d and M40i.
Facelift Launched Since Original current-generation version Original current-generation version
Facelift Version Ending Current Current
Body Style SUV SUV
Model Year 2026 2026
Production Status Active active
Segment Medium SUV Premium SUV
Vehicle Type Passenger vehicle Car
Spec SEALION 7 X4
Length 4830 mm 1 mm
Width 1925 mm 1 mm
Height 1620 mm 1 mm
Wheelbase 2930 mm 1 mm
Ground Clearance (Default) 163 mm 140 mm
Ground Clearance (With Full Seating Load) 140 mm 125 mm
Fuel Tank Capacity 0 l 50 l
Boot/Cargo Space 500 l 472 l
Kerb Weight 2340 kg 1555 kg
Gross Vehicle Weight (GVW) 2750 kg 2060 kg
Payload Capacity 410 kg 452 kg
Towing Capacity 1500 kg 1600 kg
Seating Capacity 5 seats 5 seats
Number of Rows 2 rows 2 rows
Doors 5 doors 5 doors
Minimum Turning Radius 5.85 m 5.6 m
Front Headroom 980 mm 992 mm
Rear Headroom 940 mm 941 mm
Front Legroom 1100 mm 1038 mm
Rear Legroom 820 mm 883 mm

In depth: how these cars differ

This SEALION 7 and X4 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: SEALION 7 100 vs X4 97.

Efficiency index: SEALION 7 90 vs X4 57.

Safety-equipment index: SEALION 7 99 vs X4 92.

Practicality index: SEALION 7 62 vs X4 60.

Ownership-cover index: SEALION 7 not separately scored vs X4 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

SEALION 7 leads by 10 points

SEALION 7 has a modest catalogue-index lead, while X4 remains close.

Evidence leader 88 /100
Lead 10 points
Data 69% source coverage
88
#1 Evidence leader

SEALION 7

69% source coverage 3 strong categories
Best at Performance 100 Check Practicality 62
Performance 100
Efficiency 90
Safety 99
Practicality 62
Leads by 10 points
78
#2

X4

83% source coverage 2 strong categories
Best at Performance 97 Check Efficiency 57
Performance 97
Efficiency 57
Safety 92
Practicality 60
Performance 24% Safety 22% Practicality 22% Efficiency 17% Ownership 15%
Category leaders What moves the verdict
Performance SEALION 7 +3 Efficiency SEALION 7 +33 Safety SEALION 7 +7 Practicality SEALION 7 +2

Moderate difference in the source-backed catalogue index.

Why this score View full breakdown
Evidence-index leader

SEALION 7

Performance 100/100
Efficiency 90/100
Safety 99/100
Practicality 62/100

X4

Performance 97/100
Efficiency 57/100
Safety 92/100
Practicality 60/100

What the evidence means

Evidence index BYD SEALION 7 leads the specification evidence index with 88 pts vs 78 pts for X4

In Hagalu's specification evidence index, SEALION 7 leads. However, X4 may suit buyers prioritising different confirmed fields. Ultimately, the right choice depends on your driving priorities in South Africa.

Related comparisons

Continue with closely related South Africa models and comparable body styles.

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SEALION 7 vs Tank 500 →
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X4 vs bZ4X →

SEALION 7 vs X4 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.