Open Labor Project
☰
💙
Support
🩺
Diagnose
🔎
VIN
🛠️
Repairs
📚
Specs
▾
⚠️
Recalls
⚖️
Compare
🏆
Rankings
🚨
Neutral
🌧️
Wipers
🇺🇸 US
🇨🇦 CA
🇬🇧 UK
🇩🇪 DE
🇦🇺 AU
🇪🇺 EU
🇷🇺 RU
🔧
The Diag Desk
Real humans
🧪
Myth Lab
Busted
{}
API
Plans
ShopBase
Shop Management · $249/mo
💙
Support
ShopBase
Complete shop management for auto repair shops · $249/mo
Try ShopBase →
← Mercury
Mercury Montego
4 generations · 13 engine options · data across all years of the Montego platform.
8,880
Labor times
63
Torque specs
0
DTC codes
0
Repair procedures
91
Fluid specs
0
Open recalls
5-Year Cost of Ownership · 1978 250ci I6
$6,674
~$1,335/yr maintenance labor at $150/hr. Other engines/years vary — pick a generation below to see its breakdown.
Generations & engine options
1978
2 engine options
250ci I6
RWD
302ci V8
RWD
1977
1 engine option
250ci I6
RWD
1976
5 engine options
250ci I6
RWD
302ci V8
RWD
351ci V8
RWD
400ci V8
RWD
460ci V8
RWD
1975
5 engine options
250ci I6
RWD
302ci V8
RWD
351ci V8
RWD
400ci V8
RWD
460ci V8
RWD
Become a Founding Sponsor
Your name on every Mercury Montego procedure
For $99, we generate the full step-by-step repair set for the 1978 250ci I6 — free for everyone, forever, with your name on it.
Sponsor — $99 →
⚖️ Compare the Montego to another vehicle →