INEOS Automotive cars: MPG and fuel economy by model

The EPA has rated 6 vehicles from INEOS Automotive across 2 distinct models since 2023. The list below covers every INEOS Automotive model with its combined MPG and estimated annual fuel cost, organised by model year so you can see how the lineup has evolved.

Below you will find every INEOS Automotive model in the EPA dataset, split into a recent table for the last five model years and a longer table for the rest. Click any model and year to see the full breakdown, including city and highway MPG, tailpipe CO₂ emissions, and the engine and drivetrain specification.

INEOS Automotive fuel economy snapshot

Across every INEOS Automotive the EPA has ever rated, the most efficient is the 2025 INEOS Automotive Grenadier at 15 combined MPG. That figure includes electric vehicles, which use MPGe rather than a true gallon of fuel.

For the 2025 model year, INEOS Automotive's lineup averages 14.5 combined MPG across 2 models. The lineup is currently all gasoline-powered.

The bar chart below ranks the most efficient INEOS Automotive models for the 2025 model year. Use it as a quick way to spot the leader in the lineup, then click through for the full breakdown of city and highway MPG, annual fuel cost, and the engine and drivetrain.

Most efficient INEOS Automotive models for 2025

Recent INEOS Automotive models

Recent INEOS Automotive models from the 2021 model year onward, sorted by year and model. Trims appear separately when the EPA rates them as distinct vehicles (for example, when an all-wheel-drive variant has its own MPG figures).

Year	Model	Combined MPG	Annual fuel cost
2025	Grenadier	15 MPG	$4,600
2025	Grenadier Trialmaster Edition	14 MPG	$4,950
2024	Grenadier	15 MPG	$4,600
2024	Grenadier Trialmaster Edition	14 MPG	$4,950
2023	Grenadier	15 MPG	$4,600
2023	Grenadier Trialmaster Edition	14 MPG	$4,950

Source: U.S. EPA fuel economy dataset. Annual fuel cost assumes 15,000 miles of driving per year.