2018 Kia Niro EPA Fuel Economy Summary

The 2018 Kia Niro delivers an EPA-certified 43–50 MPG combined (46–52 city / 40–49 highway depending on engine and drivetrain) across 4 configurations. Plug-in hybrid (PHEV) models offer up to 26 miles of all-electric range at 105 MPGe. Estimated annual fuel costs range from $1,250 to $1,450.

Combined MPG
43–50 MPG
55% city / 45% highway weighted
City MPG
46–52 MPG
Stop-and-go urban cycle
Highway MPG
40–49 MPG
Sustained open-highway test
Annual Fuel Cost
$1,250–1,450
EPA estimate @ 15,000 miles/yr

2018 Kia Niro Powertrain & Efficiency Comparison

Factual efficiency differences across gasoline, hybrid, plug-in hybrid, and electric variants

Gas-Electric Hybrid

Hybrid (HEV) Trims

43–50 MPG Combined

Annual Fuel Cost: $1,250–$1,450

Plug-In Hybrid

Plug-In Hybrid (PHEV)

26 mi EV Range • 105 MPGe

Gasoline Combined: 46 MPG • Annual Energy Cost: $1,350

Official EPA Fuel Economy Ratings by Configuration (4 Variants)

Laboratory certification test values across engine, transmission, and drivetrain permutations

Configuration / Model Powertrain Drivetrain Transmission City Highway Combined EV Range Annual Fuel Cost CO2 (g/mi)
Niro FE Regular 1.6L Hybrid Front-Wheel Drive Automatic (AM6) 52 MPG 49 MPG 50 MPG — $1,250 —
Niro Regular 1.6L Hybrid Front-Wheel Drive Automatic (AM6) 51 MPG 46 MPG 49 MPG — $1,250 —
Niro Plug-in Hybrid Regular Gas and Electricity 1.6L Plug-in Hybrid Front-Wheel Drive Automatic (AM6) 110 MPGe (48 MPG) 99 MPGe (44 MPG) 105 MPGe (46 MPG) 26 mi $1,350 —
Niro Touring Regular 1.6L Hybrid Front-Wheel Drive Automatic (AM6) 46 MPG 40 MPG 43 MPG — $1,450 —
EPA Test Methodology: Fuel economy estimates are determined by vehicle manufacturers in accordance with EPA regulations (40 CFR Part 600) and verified by EPA laboratories. Estimates assume 15,000 miles per year of driving (55% city, 45% highway) at prevailing fuel and electricity prices.

Deterministic Fuel Cost & Consumption Benchmarks

Standardized annual energy consumption and operating cost metrics based on 15,000 annual miles

Fuel Cost per 25 Miles

$1.75–$2.03

Based on $3.50 per gallon regular gasoline

Annual Fuel Consumption

300–349 Gallons

Estimated annual energy units needed for 15,000 miles

5-Year Fuel Cost vs Avg Vehicle

Official EPA Benchmark

Compared to the average new vehicle over 5 years

Related Official Reports for 2018 Kia Niro

Cross-reference safety ratings, owner defect complaints, and recall campaigns

Official US Government Data Provenance

Fuel economy ratings, electric range figures, and energy cost estimates on this page are retrieved directly from the United States Environmental Protection Agency (EPA) and U.S. Department of Energy (FuelEconomy.gov) certified vehicle database.

Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.