As fuel prices continue to climb, the need for fuel-efficient diesel cars has never been more urgent. In South Africa, diesel cars are becoming a top choice for many, as they combine excellent fuel economy with impressive driving performance.
While diesel models may come with a higher initial price tag, they tend to offer substantial savings in the long run thanks to their efficiency. With more people focusing on sustainability and cost-effectiveness, it’s crucial to choose a car that balances both. Below, we highlight the most fuel-efficient diesel cars available in South Africa, offering a blend of economy, luxury, and practicality.
Most Fuel-Efficient Diesel Cars in South Africa
1. Mercedes-Benz CLA 220d – 4.4 L/100km
The facelifted Mercedes-Benz CLA 220d boasts a 2.0-litre turbodiesel engine producing 140 kW and 400 Nm, paired with an 8-speed dual-clutch automatic transmission. With a fuel consumption claim of just 4.4 L/100km, this sleek sedan is available in two trims:
- Progressive – R969 256
- AMG Line – R998 956
2. Mercedes-Benz A200d Sedan – 4.5 L/100km
Equipped with a 2.0-litre turbodiesel engine generating 110 kW and 320 Nm, the Mercedes-Benz A200d sedan is another frugal option. It also features an 8-speed dual-clutch automatic transmission and boasts a fuel economy figure of 4.5 L/100km.
- Progressive – R970 614
- AMG Line – R1 000 314
3. Mercedes-Benz C220d – 4.7 L/100km
The C-Class C220d features a mild-hybrid 2.0-litre turbodiesel engine producing 147 kW and 440 Nm, coupled with a 9-speed automatic transmission. Mercedes-Benz claims a fuel consumption figure of 4.7 L/100km.
- Starting price – R1 134 587
4. BMW 2 Series 218d & 220d – 4.8 L/100km
The BMW 2 Series, launched in 2022, offers impressive fuel efficiency in its diesel variants:
- 218d – 110 kW / 350 Nm (Gran Coupe) – R745 373
- 220d – 140 kW / 400 Nm (Coupe) – R905 037
Both versions are equipped with a 2.0-litre turbocharged diesel engine and an 8-speed automatic transmission, delivering a claimed fuel economy of 4.8 L/100km.
5. BMW 420d Coupe – 4.8 L/100km
Featuring the same 140 kW / 400 Nm 2.0-litre turbodiesel engine as the 2 Series, the BMW 420d Coupe achieves a fuel consumption of 4.8 L/100km.
- 420d Coupe – R1 045 373
- 420d Gran Coupe – R1 046 044 (5 L/100km)
6. Renault Duster 1.5 DCi Zen Automatic – 4.8 L/100km
The outgoing Renault Duster remains a fuel-efficient contender, with its 1.5-litre turbodiesel engine producing 80 kW and 250 Nm. Paired with a 6-speed automatic transmission, it boasts an excellent fuel consumption of 4.8 L/100km.
- Starting price – R451 999
7. BMW 3 Series 320d – 4.9 L/100km
The refreshed BMW 3 Series, introduced in October 2024, features a diesel-powered 320d variant that generates 140 kW and 400 Nm from its 2.0-litre turbodiesel engine. The model, paired with an 8-speed automatic transmission, offers a claimed fuel economy of 4.9 L/100km.
- Starting price – R960 877
Best Value Car for Everyday Use
For those looking for the best value for daily commuting without compromising on fuel efficiency, the Renault Duster 1.5 DCi Zen Automatic stands out. Its affordable price and solid fuel economy make it a practical choice for everyday use, especially for families or those needing a versatile vehicle for various driving conditions. At R451 999, it’s the best budget-friendly option without sacrificing too much in performance or features.
Final Thoughts
If you are in the market for a fuel-efficient diesel vehicle in South Africa, these models should be at the top of your list. With fuel prices remaining unpredictable, opting for a car with excellent fuel economy can lead to long-term savings while still providing a premium driving experience.
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