Many drivers rely on their vehicles for daily commutes, road trips, and errands, yet fuel efficiency often becomes a costly afterthought. Choosing a car with poor gas mileage can lead to frequent fill-ups, higher long term expenses, and unnecessary environmental impact.
This overview examines some of the worst cars for gas mileage across different model years and segments, focusing on real world performance rather than idealized estimates.
| Model | Year | City MPG | Highway MPG |
|---|---|---|---|
| Chevrolet Suburban | 2022 | 18 | 24 |
| Ford Expedition | 2023 | 19 | 26 |
| Lexus LX | 2022 | 17 | 21 |
| Mercedes‑Maybach GLS 600 | 2023 | 15 | 20 |
| Cadillac Escalade | 2023 | 17 | 23 |
Fuel Economy In Larger Trucks And Suvs
The largest trucks and full size SUVs consistently rank among the worst cars for gas mileage due to their weight, size, and often less efficient engines. Models like the Chevrolet Suburban and Ford Expedition prioritize power and towing capacity over efficiency, leading to lower city and highway figures.
Luxury buyers seeking prestige and space frequently choose vehicles such as the Lexus LX and Mercedes Maybach GLS 600, yet these options trade performance for significantly higher fuel consumption compared to more compact alternatives.
The Impact Of Engine Choices And Drivetrains
Traditional Gas Engines Versus Downsized Options
Many worst cars for gas mileage rely on larger traditional gasoline engines that prioritize durability and towing performance over economy. While some manufacturers have introduced turbocharged or hybrid variants, base trims often retain older, less efficient powertrains.
All Wheel Drive And Weight Penalties
All wheel drive systems add weight and mechanical friction, further reducing fuel efficiency in models that already face a steep uphill battle at the pump. Combined with high drag coefficients, these designs amplify the cost of every mile driven.
Real World Driving Conditions And Habits
Urban stop and go traffic heavily penalizes larger vehicles, turning already low city mpg numbers into costly experiences for daily commuters. Aggressive acceleration, extended idling, and towing heavy trailers can push actual consumption well beyond official estimates.
Understanding how specific models behave in real scenarios helps drivers anticipate fuel costs and consider alternatives such as route planning, carpooling, or exploring more efficient vehicle segments where appropriate.
Reliability, Maintenance, And Long Term Costs
Some of the vehicles with the worst gas mileage also carry higher maintenance expenses due to complex suspension, braking, and cooling systems designed to manage their mass and power. Tires, brake pads, and engine components may wear faster under the constant strain of heavy workloads.
Buyers focused on total cost of ownership must factor in fuel, insurance, and repairs, comparing these figures against potential savings from choosing a more efficient model in a similar class.
Key Takeaways For Buyers Prioritizing Efficiency
- Compare city and highway mpg across models, not just peak highway figures.
- Consider how vehicle weight, size, and drivetrain choice affect real world fuel costs.
- Evaluate total cost of ownership, including fuel, insurance, and maintenance.
- Use route planning and efficient driving techniques to reduce consumption where vehicle choice is fixed.
- Explore newer hybrid or alternative powertrain options before committing to a traditional large gasoline vehicle.
FAQ
Reader questions
Why do full size SUVs consistently show the worst gas mileage among everyday vehicles?
Full size SUVs are heavy, boxy, and often equipped with power hungry engines designed for towing and off road use, which dramatically increases rolling resistance and aerodynamic drag.
Do luxury full size SUVs perform worse than mainstream models in terms of fuel efficiency?
Yes, many luxury full size SUVs add weight with premium materials and advanced features, while their base engines are often tuned for smoothness and power rather than efficiency.
Can all wheel drive be justified if fuel economy is a concern on large vehicles? All wheel drive improves traction but adds weight and mechanical losses, making it a poor choice for buyers whose primary goal is minimizing gas consumption. How much can driving habits really change the mpg of a large truck or suv?
Conservative driving, reduced idling, and proper tire pressure can noticeably improve city and highway figures, yet the gains rarely close the gap with smaller, more aerodynamic vehicles.