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COMPARISON · THE SHOWDOWN
OPEN LABOR PROJECT
VEHICLE A
Plymouth
Valiant
225ci I6
RWD · automatic · gas
VS
VEHICLE B
Plymouth
Valiant
318ci V8
RWD · automatic · gas

Real labor data. Real maintenance costs. Real recall counts. No subscription, no paywall — free for every wrench-turner.

01

Specifications

Year
1978
1978
Engine
225ci I6
318ci V8
Drivetrain
RWD
RWD
Transmission
automatic
automatic
Fuel
gas
gas
02

Powertrain

Engine output, acceleration, top speed, handling, braking — and Nürburgring if either car ran one.

Horsepower
hp
140hp
Torque
lb-ft
245lb-ft
0–60 mph
12.5s
Quarter Mile
18.5s @ 75 mph
Top Speed
105 mph
Skidpad
60–0 Braking
70–0 Braking
Curb Weight
3,400 lb
Max Towing
2,000 lb
Max Payload
1,100 lb

Performance specs synthesized from manufacturer figures and instrumented magazine tests (Car and Driver, Motor Trend, Road & Track). MPG from EPA fueleconomy.gov. Numbers flagged as "low confidence" by AI generation are conservative estimates from related platforms.

04

Cost of Ownership

★ WINNER
5-Year Maintenance
$6,844
0.11 $/mi
5-Year Maintenance
$7,132
0.12 $/mi
🏆
ADVANTAGEPlymouth ValiantSaves you $288 over 5 years (4% less in routine maintenance labor)

Routine maintenance only. Cost = labor hours × $150/hr × estimated 5-yr frequency. Parts cost not included.

05

Maintenance Breakdown

Hours per common service. Lower is faster (and cheaper) at the shop.

Oil & filter change
0.4 hrs$1,200 / 5yr
0.3 hrs$1,020 / 5yr
Tire rotation
0.5 hrs$600 / 5yr
0.5 hrs$600 / 5yr
Front brake pads
1.0 hrs$460 / 5yr
1.2 hrs$520 / 5yr
Rear brake pads
1.0 hrs$440 / 5yr
1.2 hrs$500 / 5yr
Differential fluid
1.0 hrs$380 / 5yr
1.2 hrs$440 / 5yr
Wiper blades
0.2 hrs$240 / 5yr
0.3 hrs$300 / 5yr
Brake fluid flush
0.8 hrs$270 / 5yr
0.8 hrs$270 / 5yr
12V battery
0.3 hrs$245 / 5yr
0.3 hrs$245 / 5yr
Cabin air filter
0.3 hrs$210 / 5yr
0.4 hrs$255 / 5yr
Coolant flush
1.2 hrs$230 / 5yr
1.2 hrs$230 / 5yr
Spark plugs
0.8 hrs$200 / 5yr
1.0 hrs$230 / 5yr
Intake manifold gasket
3.5 hrs$185 / 5yr
4.5 hrs$230 / 5yr
Oxygen sensor
1.5 hrs$173 / 5yr
1.8 hrs$195 / 5yr
Water pump
2.5 hrs$173 / 5yr
2.5 hrs$173 / 5yr
Oil pan gasket
3.5 hrs$144 / 5yr
4.2 hrs$170 / 5yr
Fuel filter
0.3 hrs$150 / 5yr
0.3 hrs$150 / 5yr
Serpentine belt
0.6 hrs$125 / 5yr
0.7 hrs$140 / 5yr
Engine air filter
0.2 hrs$120 / 5yr
0.2 hrs$120 / 5yr
Alternator
1.2 hrs$120 / 5yr
1.2 hrs$120 / 5yr
Valve cover gasket
1.2 hrs$96 / 5yr
1.5 hrs$114 / 5yr
Power steering flush
0.5 hrs$95 / 5yr
0.6 hrs$110 / 5yr
Ignition coil
0.8 hrs$80 / 5yr
1.0 hrs$92 / 5yr
Starter motor
1.2 hrs$76 / 5yr
1.2 hrs$76 / 5yr
Thermostat
1.0 hrs$67 / 5yr
1.0 hrs$67 / 5yr
PCV valve
0.3 hrs$65 / 5yr
0.3 hrs$65 / 5yr
06

Active Recalls

Open NHTSA Recalls
0
CLEAR
Open NHTSA Recalls
0
CLEAR

✓ Both vehicles are completely clear of open safety recalls.

08

The Verdict

TOO CLOSE TO CALL

Across cost of ownership and recall count, neither vehicle pulls decisively ahead. Pick on personal preference — drivetrain, transmission feel, brand loyalty, or the engine that puts a smile on your face.

Open the full dashboard for either truck

Labor times, torque specs, fluid capacities, DTC codes, repair procedures, recalls, common platform problems.