X17DTL/Y17DT 1.7d vs 1.2 NA X12XE / Z12XE / Z12XEP / A12XEL / A12XER (Family 0)
Side-by-side reliability comparison
Higher reliability score
1.2 NA X12XE / Z12XE / Z12XEP / A12XEL / A12XER (Family 0)
ACCEPTABLE
76/100
+2 points over X17DTL/Y17DT 1.7d
0
/ 100
ACCEPTABLE
X17DTL/Y17DT 1.7d
Opel
0
/ 100
ACCEPTABLE
1.2 NA X12XE / Z12XE / Z12XEP / A12XEL / A12XER (Family 0)
Opel
Specifications
X17DTL/Y17DT 1.7d
1.2 NA X12XE / Z12XE / Z12XEP / A12XEL / A12XER (Family 0)
Brand
Opel
Opel
Verdict
ACCEPTABLE
ACCEPTABLE
Reliability
74
76
Years
1994--2006
2000--2014
Displacement
1686 cc
1229 cc
Layout
I4
I4
Type
Diesel
Petrol Na
Power
68--75 hp
65--85 hp
Known Issues
2
6
Total Risk Cost
€450--€1,200
€780--€1,480
Character
X17DTL/Y17DT 1.7d
"Corsa B/C, Combo. Isuzu-derived diesel. Simple, indirect injection (early) or common rail (Y17DT). No DPF. Economical. Glow plug issues. Injection pump on early units. Reliable work van engine."
1.2 NA X12XE / Z12XE / Z12XEP / A12XEL / A12XER (Family 0)
"Simple 16-valve four-cylinder for the Corsa, Agila and Astra; lifespan around 250,000 km. The weak point is the timing chain and tensioner - avoid an early Z12XE without chain records, listen to every cold start - plus a leaky oil-pressure switch and ignition-module misfires."
Issues Comparison
X17DTL/Y17DT 1.7d 2
▲ HIGH
Injection pump (indirect inj models)
○ MINOR
Glow plug failure
1.2 NA X12XE / Z12XE / Z12XEP / A12XEL / A12XER (Family 0) 6
▲ HIGH
Timing chain and tensioner wear — chain stretch
● MODERATE
Oil-pressure switch leak — oil can wick into the ECU harness
○ MINOR
Thermostat failure
○ MINOR
Ignition coil / ignition module failure
○ MINOR
Valve cover gasket seep
○ MINOR
Water pump wear