Mercedes-Benz A-Class vs MG Mg Zs
A side-by-side comparison of the used Mercedes-Benz A-Class and MG Mg Zs — price, real monthly finance, running costs and MOT reliability, all from live UK stock.
Reviewed by the Motoring Today Editorial team · methodology in our editorial standards.
Mercedes-Benz A-Class or MG Mg Zs — which should I buy?
The Mercedes-Benz A-Class starts cheaper (Mercedes-Benz A-Class from £6,567, MG Mg Zs from £9,244), with illustrative finance from £209/mo and £223/mo respectively. On MOT reliability they score 47% and 49% first-time passes. The full spec, running-cost and deal breakdown is below.
- A-Class from
- £6,567
- Mg Zs from
- £9,244
- In stock
- 10 vs 5
| From live stock | Mercedes-Benz A-Class 10 in stock · from £6,567 | MG Mg Zs 5 in stock · from £9,244 |
|---|---|---|
| Cheapest in stock | £6,567★ lowest | £9,244 |
| Median price | £13,147 | £10,334★ lower |
| From (per month)Illustrative, from live stock | £209/mo (HP, 60 months, 14.9% APR)★ lower | £223/mo (HP, 60 months, 12.9% APR) |
| Road tax (VED)Typical car in stock | £200/yr | £200/yr |
| Median mileage | 51,259 mi | 46,587 mi★ lower |
| Median year | 2018 | 2019★ newer |
| Median CO₂ | 125 g/km★ cleaner | 145 g/km |
| Typical power | 154 bhp★ more | 110 bhp |
| Most common fuel | Petrol | Petrol |
| Most common gearbox | Automatic | Automatic |
| MOT first-time passDVSA history | 47% | 49%★ more reliable |
| Great/good deals in stockMotoring Today price rating | 4 / 10 | 2 / 5 |
| View all 10 A-Class → | View all 5 Mg Zs → |
Motoring Today score
Our 0–100 vehicle-intelligence score: reliability is from real DVSA MOT pass rates, the rest from manufacturer specs (MPG/CO₂, insurance group, Euro NCAP, dimensions). Higher is better — the stronger side is highlighted.
| Score | Mercedes-Benz A-Class | MG Mg Zs |
|---|---|---|
| Overall | 67/100 | 51/100 |
| Reliability | 60 | 10 |
| Running costs | 80 | 63 |
| Safety | 60 | — |
| Family & practicality | 79 | 83 |
| Insurance | 53 | 63 |
A guide, not a guarantee — based on the sample of stock and MOT/spec records we hold for each model.
Specs, side by side
Manufacturer specifications across the Mercedes-Benz A-Class and MG Mg Zs trim range. The stronger figure is highlighted where there's a clear better/worse direction (dimensions are shown for reference only).
| Spec | Mercedes-Benz A-Class | MG Mg Zs |
|---|---|---|
| MPG (combined) | 36–80 mpg | 29–55 mpg |
| CO₂ emissions | 17–197 g/km | 115–227 g/km |
| Insurance group1 (cheapest) – 50 | Group 9–45 | Group 10–33 |
| Euro NCAP safety | 73% pillar avg | 3 stars (2017) |
| 0–60mph | 4.1s | 7.3s |
| Power | 75–375 bhp | 99–193 bhp |
| Seats | 5 | 5 |
| Doors | 5 | 5 |
| Length | 4299 mm | 4386 mm |
| Width | 1992 mm | 1923 mm |
| Height | 1440 mm | 1386 mm |
How we compare. The “best value overall” column and the cells marked ★ are chosen from live market data, running costs, DVSA MOT history and manufacturer specs — the side that wins the most comparable rows leads. Deal ratings come from the Motoring Today price model. Our methodology →
About the finance figures
Monthly payments shown are illustrative examples drawn from real quotes on cars currently in stock — the exact rate, term and APR depend on your circumstances, the lender and a credit check. They are not an offer of finance and are not a representative example of the total cost of credit.
Motoring Today is a trading style of Motor Genius Group Ltd (FRN 960504), an appointed representative of The Compliance Guys Ltd, which is authorised and regulated by the Financial Conduct Authority (FRN 941360).
Motoring Today is a credit broker, not a lender.
Frequently asked questions
- Is the Mercedes-Benz A-Class or the MG Mg Zs cheaper to buy?
- In current stock the Mercedes-Benz A-Class starts lower: the Mercedes-Benz A-Class is available from £6,567 (median £13,147) and the MG Mg Zs from £9,244 (median £10,334).
- What are the monthly finance payments on the Mercedes-Benz A-Class vs the MG Mg Zs?
- Illustrative finance starts from £209/mo (HP, 60 months, 14.9% APR) on the Mercedes-Benz A-Class and £223/mo (HP, 60 months, 12.9% APR) on the MG Mg Zs. These are examples from cars currently in stock, not offers of finance — the actual rate, term and APR depend on your circumstances, the lender and a credit check.
- Which is cheaper to tax, the Mercedes-Benz A-Class or the MG Mg Zs?
- The most common annual road tax (VED) across Mercedes-Benz A-Class stock is £200/yr, versus £200/yr for the MG Mg Zs — so the Mercedes-Benz A-Class is generally cheaper to tax.
- Which is more reliable at MOT, the Mercedes-Benz A-Class or the MG Mg Zs?
- Based on DVSA MOT history across our stock, the Mercedes-Benz A-Class averages a 47% first-time pass rate and the MG Mg Zs 49% — the MG Mg Zs edges it on this measure.