2018 Hyundai Ioniq Plug-in Hybrid
Fuel Economy Overview
The 2018 Hyundai Ioniq Plug-in Hybrid achieves an EPA-estimated 52 MPG in combined city and highway driving, with 53 MPG in the city and 52 MPG on the highway. Powered by a 1.6L 4-cylinder engine paired with a automatic (am6), this midsize cars features Front-Wheel Drive drive.
In terms of environmental impact, the 2018 Ioniq Plug-in Hybrid produces approximately 75 grams of CO2 per mile. This figure is measured under standardized EPA test conditions and represents tailpipe emissions only. For context, the average new vehicle sold in the United States produces approximately 400 grams of CO2 per mile, meaning this Ioniq Plug-in Hybrid performs better than the national average in this regard.
The estimated annual fuel cost for this vehicle is $1,150, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would spend $6,500 over a 5-year period. This calculation accounts for differences in fuel consumption efficiency and provides a practical measure of long-term ownership costs attributable to fuel economy.
Energy DNA
Green Scorecard
Personalized Commute CalculatorEPA defaults to 55% City / 45% Hwy
Adjust the slider to match your daily driving habits. City driving involves stop-and-go traffic under 45mph, while highway driving represents sustained speeds over 55mph.
Aerodynamic Speed Penalty
EPA highway tests average roughly 48 mph. Driving at 75 mph increases aerodynamic drag exponentially. Expect your real-world highway fuel economy to drop by roughly 15-20% at interstate speeds.
⚡ EV Climate Range Simulator
Extreme temperatures severely impact lithium-ion battery chemistry and require heavy HVAC usage. See how your range degrades in freezing winters or scorching summers.
EV / PHEV Intel
Range Anxiety Index: High Anxiety
Urban micro-mobility only. Do not attempt long distance travel.
5-Year Total Cost of Ownership
Recall Intelligence
Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Ioniq HEV and Ionic PHV vehicles previously recalled under recall number 18V-704. The Power Relay Assembly (PRA) located underneath the rear seat may overheat.
Consequence & Remedy
Consequence: An overheated PRA increases the risk of a fire.
Remedy: Dealers will inspect and replace the main relay or PRA, as necessary, free of charge. Owner notification letters were mailed August 23, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 232. This recall replaces NHTSA recall number 18V-704. Vehicles already repaired under the previous recall will need to have the new remedy completed.
Hyundai Motor America (Hyundai) is recalling certain 2017-2018 Hyundai Ioniq Hybrid and 2018 Ioniq Plug-In Hybrid vehicles. The Main Relay within the Power Relay Assembly (PRA) may have inadequate connections between its contacts, causing increased electrical resistance.
Consequence & Remedy
Consequence: The increased electrical resistance can overheat the rear seat which is above the PRA, increasing the risk of a fire.
Remedy: Hyundai will notify owners, and dealers will inspect the Power Relay Assembly (PRA) for damage. If no damage is found, the main relay will be replaced. If damage is found, the PRA will be replaced. These repairs will be performed free of charge. The recall began February 28, 2019. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 178.
Loading live complaint data...
Looking for comprehensive historical data?
NHTSA FARS (Fatal Crash History) and broader generational safety trends are aggregated at the model level rather than by specific engine configurations. View the complete historical data profile for all Hyundai Ioniq Plug-in Hybrid configurations.
Similar 2018 Midsize Cars Alternatives
2018 Toyota Camry Hybrid LE
2.5L 4-cyl Front-Wheel Drive
2018 Toyota Prius
1.8L 4-cyl Front-Wheel Drive
2018 Toyota Prius Prime
1.8L 4-cyl Front-Wheel Drive
2018 Toyota Prius Eco
1.8L 4-cyl Front-Wheel Drive
2018 Chevrolet Malibu Hybrid
1.8L 4-cyl Front-Wheel Drive
2018 Toyota Camry Hybrid XLE/SE
2.5L 4-cyl Front-Wheel Drive
Fuel Cost Analysis
Based on 15,000 miles/year and current fuel prices.
Efficiency Breakdown
Estimated Lifetime Carbon Footprint
(Based on 200,000 miles driven)