2018 Cadillac CT6 Plug-In

2.0L 4-cyl · CVT (continuously variable) · RWD

Plug-in hybridPremium and ElectricityMidsize Cars

Official EPA record #39767 from FuelEconomy.gov · data 2026-07-26 · every assumption below is yours to edit. How this is computed

Per month

$138.80

Per year

$1,666

Per mile

13.9¢/mi

5-year total

$8,330

sedan body style — not this exact model

Notes & official EPA estimate

3,840 kWh of electricity / year193.1 gal of fuel / yearelectricity @ $0.18/kWhgasoline @ $4.96/galAt $5.96/gal: $154.89/mo

A mile road trip costs about $41.70 in energy.

Electric-mile share defaults to the EPA utility factor for this vehicle (59% of miles in charge-depleting mode, based on typical daily driving and charging once per day). Adjust it to match your own charging habits.
MPGe values shown on the EPA label combine electricity and gasoline and cannot be used as ordinary MPG; this estimate prices each energy source separately instead.

Official FuelEconomy.gov estimate: $3,100/year — assumes 15,000 miles/year and EPA price assumptions. The figures above use your inputs instead.

Compare with another vehiclePrices: EPA national averages, Jul 24, 2026 — override anytime.

At 12,000 miles per year (55% city / 45% highway) with EPA national-average prices ($4.96/gal premium, $0.18/kWh), this 2018 Cadillac CT6 Plug-In costs about $138.80 per month in gasoline and electricity — $1,666 per year, 13.9¢/mi, $8,330 over five years.Assumptions are editable below. Prices as of July 24, 2026 · EPA vehicle record #39767. EPA figures are laboratory estimates; real-world cost varies with driving conditions, weather, and where you buy energy.

Official EPA efficiency

Measure	Value
Gasoline mode MPG (city/hwy/combined)	23 / 29 / 25
Electric mode use (city/hwy/combined)	59.0 / 48.0 / 54.0 kWh/100 mi
EPA composite MPGe (never used as MPG here)	35 / 45 / 39
EPA utility factor (share of electric miles)	59%
Electric range	31 mi

Official EPA estimates

Estimate	Value
Official annual fuel cost (15,000 mi/yr)	$3,100/yr
Total range (gas + electric)	430 mi
Tailpipe CO₂	144 g/mi
EPA greenhouse gas score	10/10
EPA smog rating (Federal Tier 3 Transitional Bin 110)	3/10
Charge time at 240V	4.5 h

Source: U.S. EPA / DOE FuelEconomy.gov, vehicle record #39767 (record updated 2023-10-19). Snapshot processed 2026-07-26; page data last changed 2023-10-19.

View this record on FuelEconomy.gov

Related configurations

Same year, same family

Adjacent model years