2018 Mercedes-Benz SL450

3.0L 6-cyl · 9-speed automatic · RWD

GasolinePremiumTwo Seaters

Official EPA record #39411 from FuelEconomy.gov · data 2026-07-26 · every assumption below is yours to edit. How this is computed

Per month

$216.11

Per year

$2,593

Per mile

21.6¢/mi

5-year total

$12,965

two-seater body style — not this exact model

Notes & official EPA estimate

522.9 gal of fuel / yeargasoline @ $4.96/galAt $5.96/gal: $259.69/mo

A mile road trip costs about $64.80 in energy.

Official FuelEconomy.gov estimate: $3,350/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), this 2018 Mercedes-Benz SL450 costs about $216.11 per month in fuel — $2,593 per year, 21.6¢/mi, $12,965 over five years.Assumptions are editable below. Prices as of July 24, 2026 · EPA vehicle record #39411. EPA figures are laboratory estimates; real-world cost varies with driving conditions, weather, and where you buy energy.

Official EPA efficiency

Measure	Value
City MPG	20
Highway MPG	28
Combined MPG	23

Official EPA estimates

Estimate	Value
Official annual fuel cost (15,000 mi/yr)	$3,350/yr
Tailpipe CO₂	383 g/mi
EPA greenhouse gas score	5/10
EPA smog rating (Federal Tier 3 Bin 125)	3/10

Source: U.S. EPA / DOE FuelEconomy.gov, vehicle record #39411 (record updated 2018-02-12). Snapshot processed 2026-07-26; page data last changed 2018-02-12.

View this record on FuelEconomy.gov

Related configurations

Same year, same family

Adjacent model years