In South Africa, determining the lowest running costs involves looking at three pillars: Efficiency, how much electricity it uses. Maintenance, which includes service plans, etc and Insurance, which is an often overlooked but high cost. EVs were introduced to try to mitigate these types of costs, but can still be rated on the same metrics.
Related: BMW iX xDrive40 review(2021)- Reinventing the premium BMW SUV concept
The EV craze may have dipped somewhat, but the alternative-energy vehicles listed below remain a solid choice for well-heeled consumers who want to save on fossil fuels and make a dent in their efforts to save the planet.
BYD Official Prices and Specs - Three Exciting New Models for South Africa
Running Cost Metrics
| Feature | BYD Sealion 7 (Premium) | BMW iX1 (xDrive30) | Mercedes-Benz EQA (250+) |
| List Price | R1,105,900 | R1,255,000 | R1,222,500 |
| Efficiency (WLTP) | 19.8 kWh/100km | 16.8 – 18.1 kWh/100km | 17.4 – 18.7 kWh/100km |
| Maintenance Plan | 5-year / 100 000km | 5-year / 100,000km | 5-year / 100,000km |
| Battery Warranty | 8-year / 150 000km | 8-year / 100,000km | 8-year / 160,000km |
| Est. Home Charge Cost | R0.69 / km | R0.61 / km | R0.63 / km |
Note: Charging costs based on a residential rate of R3.50/kWh.
Key Cost Drivers
1. Energy Efficiency
The BMW iX1 is the efficiency champion here. It uses less energy per kilometre than the BYD, which is a heavier vehicle.
BMW iX1: On home charging, you’ll spend roughly R61 for every 100km.
BYD Sealion 7: Despite being "the value choice," its higher weight means it costs roughly R69 per 100km.
Mercedes EQA: Sits comfortably in the middle at around R63 per 100km.
2. Maintenance and Service
All three come standard with a 5-year/100,000km maintenance plan in South Africa. This means for the first five years, your scheduled service costs are essentially zero. However:
BYD has longer service intervals (20,000km) compared to the BMW (typically condition-based but often around 15,000km - 20,000km).
BMW and Mercedes parts (out of plan) are historically more expensive in SA than emerging brands, though BYD parts pricing is still stabilising in the local market.
3. Insurance
This is where the BYD Sealion 7 usually wins. Because the retail price is R150,000 to R200,000 lower than the German rivals, your monthly insurance premium will be significantly lower.
Estimated Savings: You could save between R400 and R800 per month in insurance premiums by choosing the BYD over the BMW or Mercedes, which far outweighs the BMW's slight edge in electricity efficiency.
BYD Sealion 7 Premium (2025) Quick Review - The Luxury EV for Less
The Verdict
As of 2026, the BYD Sealion 7 generally offers the lowest overall running costs, primarily due to its lower purchase price and competitive service structure, though the BMW iX1 is technically the most efficient.
Lowest Total Running Cost: BYD Sealion 7. While it's slightly less efficient than the BMW, the lower insurance premiums and lower initial finance repayments (due to the lower purchase price) make it the cheapest to keep on the road monthly.
Best for Long-Term Efficiency: BMW iX1. If you drive very high mileage (30,000km+ per year), the BMW's superior efficiency will start to close the gap.
The Middle Ground: Mercedes-Benz EQA. It offers great battery longevity and a solid maintenance reputation, but sits in the shadow of the BMW's efficiency and the BYD's value.
