Coyote 5.0 V8 vs Sigma 1.25

Side-by-side reliability comparison

Higher reliability score
Coyote 5.0 V8 BUY 82/100
+4 points over Sigma 1.25
0 / 100
BUY Coyote 5.0 V8 Ford
0 / 100
BUY Sigma 1.25 Ford

Specifications

Coyote 5.0 V8
Sigma 1.25
Brand
Ford
Ford
Verdict
BUY
BUY
Reliability
82
78
Years
2015--present
1996--2017
Displacement
4951 cc
1242 cc
Layout
V8
I4
Type
Petrol Na
Petrol Na
Power
421--507 hp
60--82 hp
Known Issues
2
1
Total Risk Cost
€500--€2,500
€50--€150

Character

Coyote 5.0 V8

"Mustang GT. Modern pushrod-free DOHC V8. Ti-VCT dual variable timing. Exceptionally reliable for a performance V8. Oil consumption on track use. No known catastrophic weaknesses."

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."

Issues Comparison

Coyote 5.0 V8 2

● MODERATE
Timing chain/phaser tick (Gen 1) €500--€2,000 80,000 km--150,000 km
○ MINOR
Oil consumption on track use €0--€500 40,000 km--100,000 km

Sigma 1.25 1

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

Models

Coyote 5.0 V8 3

Mustang S550 2015--2023 Mustang S650 2024--present Mustang S650 2024--present

Sigma 1.25 3

Fiesta Mk6 (JD/JH) 2002--2008 Fiesta Mk7 (JA8) 2008--2017 Fiesta Mk7 (JA8) 2008--2017
Full Coyote 5.0 V8 Report Full Sigma 1.25 Report