On a full tank, a 2007 Buick Lucerne typically travels roughly 315 to 500 miles, depending on engine and driving conditions.
Engine options and their impact on range
Two engines were offered in the 2007 Lucerne. Each drives efficiency differently, affecting how far you can go between refill stops.
- 3.8-liter V6: EPA estimates around 17 mpg city / 27 mpg highway; combined about 21 mpg. With an 18.5-gallon tank, this translates to roughly 315 miles in city driving, 500 miles on the highway, or about 388 miles under mixed conditions.
- 4.6-liter Northstar V8: EPA estimates around 16 mpg city / 23 mpg highway; combined about 19 mpg. Using the same 18.5-gallon tank, roughly 296 miles in the city, 426 miles on the highway, or about 352 miles under mixed conditions.
These figures illustrate the trade-off between power and efficiency. Real-world mileage can vary with load, weather, and maintenance.
Why the numbers matter for daily driving
The choice of engine affects your expected range, especially if you frequently drive mostly highway or in city traffic. For long trips, the highway efficiency of either engine will dominate mileage, but the difference persists.
Fuel tank capacity and how it translates to range
Understanding tank size helps translate EPA numbers into miles. The 2007 Lucerne typically uses a fuel tank around 18.5 gallons, with little variation by trim. This capacity is what enables the rough mileage figures above.
- Tank capacity: about 18.5 gallons (typical for the 2007 Lucerne).
With those numbers, the range under different driving styles aligns with the engine MPG values shown earlier.
Real-world factors that influence range
In practice, your actual range on a tank depends on more than the engine. Here are key variables that typically push your miles-per-tank down (or up):
- Tire pressure and tread condition
- Vehicle load and cargo weight
- Maintenance, including spark plugs and oxygen sensors
- Ambient temperature and climate control use
- Driving style, including acceleration and cruising speed
Keeping these factors optimized can help you approach the higher end of the range estimates.
Summary
The 2007 Buick Lucerne offers two engines with distinct efficiency profiles. With an 18.5-gallon tank, the expected range per tank generally falls between about 315 miles (urban-heavy driving with the Northstar V8) to roughly 500 miles (highway-dominated driving with the 3.8L V6). Real-world mileage will vary based on conditions, maintenance, and driving habits.