MG ZT (2003)
Running costs, common problems, and reliability data based on 557 real MOT tests in 2024.
MOT Pass Rate
74%
Total Tests (2024)
557
Avg Mileage
103,354 mi
Est. Annual Cost
£1,727
Is the 2003 MG ZT reliable?
Average reliability. Expect some repairs as it ages. That's 8 points below the national average of 82%. It falls below the MG brand average of 86%.
At 21 years old, 74% of MG ZTs from 2003 passed their MOT first time in 2024. That's based on 557 tests across the UK. The average mileage at this age is 103,354 miles.
How does the 2003 MG ZT compare?
Mileage Analysis
The average 2003 MG ZT has 103,354 miles on the clock, which is below the expected 155,400 miles for a 21-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a MG ZT?
The most reliable year is the 2004 model with a 81% MOT pass rate, while the 2006 model has the lowest at 71%. The 2003 sits between the two at 74%.
How much does a 2003 MG ZT cost to run?
Higher than average due to low pass rate
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MG ZT by Year
Checking a specific MG ZT?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2003 MG ZT
The 2003 MG ZT is a family car with a 1951cc diesel engine. 557 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2003, the average MOT pass rate is 72%, and this model beats that benchmark.
With an average of 103,354 miles at 21 years old, MG ZT owners tend to use this car less than the typical driver.
2003 MG ZT Fuel Costs
The 1951cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2003 MG ZT?
Total estimated annual running cost is £1,727 (£144/month), broken down as £1037 fuel, £135 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 74% pass rate. Keeping on top of servicing will help avoid surprises.
MG ZT Reliability Trend
The MG ZT has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2003 MG ZT
At 21 years old, the MG ZT is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2004 model has the highest pass rate at 81%.
Alternatives to the 2003 MG ZT
The MG ZT is actually the most reliable option among similar diesel family cars from this era. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2005) 72% pass rate (-2%) from 41,401 tests
- VAUXHALL ASTRA (2005) 69% pass rate (-5%) from 29,377 tests
- HONDA CIVIC (2005) 73% pass rate (-1%) from 24,685 tests
- AUDI A3 (2005) 72% pass rate (-2%) from 15,865 tests