Sigma 1.25 vs Duratec 2.5

Side-by-side reliability comparison

Higher reliability score
Duratec 2.5 BUY 82/100
+4 points over Sigma 1.25
0 / 100
BUY Sigma 1.25 Ford
0 / 100
BUY Duratec 2.5 Ford

Specifications

Sigma 1.25
Duratec 2.5
Brand
Ford
Ford
Verdict
BUY
BUY
Reliability
78
82
Years
1996--2017
2005--2014
Displacement
1242 cc
2521 cc
Layout
I4
I5
Type
Petrol Na
Petrol Na
Power
60--82 hp
166--172 hp
Known Issues
1
1
Total Risk Cost
€50--€150
€150--€350

Character

Sigma 1.25

"Fiesta/Ka. Simple Yamaha co-developed engine. Timing chain (good). Reliable. Low power. Thermostat housing. Coil pack. Perfect first car/city car engine."

Duratec 2.5

"Focus ST (pre-EB)/Mondeo/S-Max. Volvo-derived 5-cyl. Smooth, adequate torque. Timing belt service needed."

Issues Comparison

Sigma 1.25 1

○ MINOR
Thermostat housing crack €50--€150 60,000 km--120,000 km

Duratec 2.5 1

○ MINOR
Coolant system (same family as 2.0) €150--€350 100,000 km--180,000 km

Models

Sigma 1.25 3

Fiesta Mk6 (JD/JH) 2002--2008 Fiesta Mk7 (JA8) 2008--2017 Fiesta Mk7 (JA8) 2008--2017

Duratec 2.5 4

Mondeo Mk4 (BA7) 2007--2010 Focus Mk2 (DA3) 2005--2011 Kuga Mk1 2008--2012 Mondeo Mk3 (B5Y) 2000--2007
Full Sigma 1.25 Report Full Duratec 2.5 Report