23 MPG combined is a surprisingly respectable figure for the 2024 Chevrolet Suburban 2WD with the 3.0L Duramax diesel engine. Nobody buys a Suburban expecting Prius-like efficiency. It’s a vehicle for large families who prioritize interior space, reliable towing capability, and the ability to haul a massive amount of cargo while transporting up to nine passengers. Fuel economy is a secondary concern, tolerated as the cost of admission to this level of utility, but 23 MPG softens the blow considerably.

City and highway performance

The EPA estimates that the 2024 Suburban 2WD 3.0L Diesel achieves 21 MPG in the city and 27 MPG on the highway. The city figure is respectable, considering the sheer mass being moved from stoplight to stoplight. The highway number is where the Duramax shines. Its ample low-end torque allows for relaxed cruising at highway speeds, with the 10-speed automatic transmission keeping the engine in its optimal efficiency range. This makes the diesel Suburban a good option for families who frequently embark on long road trips, as the improved highway MPG translates to fewer fuel stops and less overall expense.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2024 Chevrolet Suburban 2WD 3.0L Diesel is $2,400. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on your driving habits and the price of diesel fuel in your area, but this number provides a useful benchmark for comparing the Suburban’s fuel costs to those of its competitors and other vehicles you might be considering. Remember, this is for the 2WD model – expect that figure to rise with the 4WD-equipped Suburban due to its extra weight and mechanical drag.

Real-world expectations

While the EPA estimates are a good starting point, real-world fuel economy can vary significantly. Driving style, traffic conditions, and cargo weight all play a role. Owners who prioritize fuel efficiency and adopt smooth driving habits are more likely to achieve numbers closer to the EPA estimates. Those who frequently tow heavy loads or accelerate aggressively should expect lower MPG figures. Regular maintenance, including proper tire inflation and timely oil changes, can also help to optimize fuel economy. A conscientious driver might see numbers equaling or slightly exceeding the EPA highway estimate on long trips.

How it compares

Compared to its gasoline-powered counterpart, the 2024 Chevrolet Suburban 2WD 5.3L V8, the 3.0L Duramax diesel offers a significant fuel economy advantage. The gasoline V8 returns a combined EPA rating of just 17 MPG. The Ford Expedition achieves around 19 MPG combined with its EcoBoost V6. Even the smaller GMC Yukon, which shares its platform with the Suburban, only manages around 17 MPG with its standard V8 engine. The Nissan Armada offers only around 15 MPG combined. These comparisons highlight the Duramax diesel’s superior fuel efficiency in a segment where gas mileage is often an afterthought. When viewed with all Chevrolet fuel economy data, it’s clear the Duramax offers a real advantage for Suburban buyers. Given its size and capability, to achieve numbers in the low-to-mid 20’s.

Tips to maximize efficiency

Driving the 2024 Chevrolet Suburban 2WD 3.0L Diesel with a light foot will yield improvements in fuel economy. Avoid aggressive acceleration and braking, and try to maintain a consistent speed. The Duramax diesel produces plenty of torque at low RPMs, so there’s no need to rev the engine unnecessarily. Observe speed limits and avoid hard accelerations.

Proper tire inflation is important for maximizing fuel efficiency. Check your tire pressure regularly and inflate them to the level recommended on the sticker inside the driver’s side doorjamb. Underinflated tires increase rolling resistance, which reduces fuel economy.

Minimize unnecessary weight by removing any items from the vehicle that you don’t need. Extra weight reduces fuel economy, and even small amounts of excess cargo can add up and impact your MPG, especially in a vehicle this large.

Consider using cruise control on the highway. By maintaining a constant speed, cruise control can help to optimize fuel efficiency, especially on long, straight stretches of road. Be mindful of traffic conditions and disengage cruise control when necessary.

Keep your engine properly maintained. Regular oil changes, air filter replacements, and other routine maintenance tasks can help to ensure that your engine is running efficiently, which can improve fuel economy. Neglecting maintenance can impact the real SUBURBAN MPG across all years.