Sigma 1.25
Ford · Sigma 1.25 (FUJA/SNJA/STJA)
1996–2017
"Fiesta/Ka. Simple Yamaha co-developed engine. Timing chain (good). Reliable. Low power. Thermostat housing. Coil pack. Perfect first car/city car engine."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 1
Thermostat housing crack
▸Slow warming, coolant leak
Standard Ford/Yamaha issue.
Θερμοστάτης — €50-150.
Models with Sigma 1.25 3
Related Guides
Other Ford Engines
Tuning Potential
None
Frequently Asked Questions
Is the Ford Sigma 1.25 reliable?
The Ford Sigma 1.25 scores 78/100 with a verdict of BUY. It has 1 documented issues with total repair costs between €50 and €150.
What are the common problems with the Sigma 1.25?
The most common issues are:
- Thermostat housing crack — minor, repair cost €50–€150, 60,000 km–120,000 km
What cars use the Ford Sigma 1.25?
How much does it cost to repair the Sigma 1.25?
Total potential repair costs for all 1 known issues range from €50 to €150. The most expensive issue is typically .
What years was the Sigma 1.25 produced?
The Ford Sigma 1.25 was produced from 1996 to 2017. It is a 1242cc I4 petrol na engine.
Scores are calculated from documented issues, repair costs, and failure patterns across thousands of owner reports and technical sources. Learn about our methodology. Always inspect before you buy.