MG MG4 vs Mazda 3: Running Costs in South Australia
Data verified April 2025
At this driving profile, the Mazda 3 is the more economical choice over 5 years in South Australia.
Running only 15,000 km per year in South Australia, the MG MG4's higher purchase price doesn't fully pay back through lower running costs within 5 years. The MG MG4 costs $76,462 in total versus $64,076 for the Mazda 3 — a difference of $12,387. The numbers don't reach break-even within this holding period. If you drive significantly more km per year, or if petrol prices rise substantially, this comparison would shift. The MG MG4 still avoids around 5,693 kg of CO₂ over the ownership period.
The economics don't stack up at this driving distance — increase annual km or extend the holding period to change the picture.
Frequently asked questions
Is the MG MG4 cheaper than the Mazda 3 over 5 years in South Australia?
At 15,000 km/yr in South Australia the Mazda 3 is the cheaper option over 5 years: $64,076 total versus $76,462 for the MG MG4. Use the calculator to adjust for your situation.
Does the MG MG4 break even against the Mazda 3 in South Australia?
At 15,000 km/yr in South Australia the MG MG4 does not fully recover its price premium within a 5-year holding period. Higher annual km or an extended holding period would change this.
How much does it cost to charge the MG MG4 vs fuel the Mazda 3 per year in South Australia?
At 15,000 km/yr in South Australia, charging the MG MG4 costs approximately $1,193/yr, versus $1,818/yr in petrol for the Mazda 3. South Australia's electricity and fuel rates are applied automatically.