The 2018 Acura TLX FWD 3.5L gets 24 MPG combined, not class-leading, but a reasonable compromise. It’s for those who want some luxury and performance without completely ignoring fuel efficiency. The TLX 3.5L appeals to drivers who like a smooth, responsive V6 engine and a comfortable ride, accepting decent fuel efficiency as part of the bargain. They prioritize a reliable Acura ownership experience instead of chasing the highest MPG.

City and highway performance

The EPA ratings show 20 MPG in the city and 32 MPG on the highway. The city MPG reflects the fuel needed for the 3.5L V6, as frequent stops increase fuel use. Starting from a stop, the V6 needs more fuel than the 4-cylinder engines in some competing cars. However, the 32 MPG highway rating is good, meaning the TLX can cruise efficiently at steady speeds. The 9-speed automatic transmission (S9) helps by allowing the engine to run at lower RPMs, reducing fuel use on long trips. The gap between city and highway MPG shows the engine’s efficiency at constant speeds, but also where it’s less efficient.

Annual fuel cost

The EPA estimates the 2018 Acura TLX FWD 3.5L will cost $2,400 per year for fuel. This is based on 15,000 miles of driving per year, a mix of city and highway, and the national average fuel price. Your actual fuel costs can change based on your driving habits, the fuel type you use, and local fuel prices. Drivers who accelerate quickly in areas with high fuel costs will likely spend more, while those with mostly highway commutes who drive conservatively may spend less.

Real-world expectations

EPA estimates are a standard, but real-world driving matters. Many owners find that achieving the EPA’s 20 MPG city rating takes effort, especially in heavy traffic. Hard acceleration and frequent short trips will lower the average. On the other hand, the 32 MPG highway number is more easily reached if you keep a steady speed and avoid speeding. Expect a combined MPG close to the EPA’s 24 MPG if you drive a mix of city and highway miles, but your specific situation will always affect the result.

How it compares

The 2018 Acura TLX FWD 3.5L’s fuel economy is in the middle of its class. The Lexus ES 350, another V6 front-wheel-drive luxury sedan, gets an EPA-estimated 22 MPG city and 32 MPG highway, slightly better than the TLX in the city. The BMW 330i with its turbocharged 4-cylinder promises 25 MPG city and 34 MPG highway, making it more fuel-efficient. The Audi A4 with its turbocharged 4-cylinder achieves 27 MPG city and 37 MPG highway, beating BMW. But neither the BMW nor the Audi delivers the smooth, naturally aspirated power of the Acura’s V6, which might be a good trade-off for some buyers. If fuel economy is most important, the Lexus ES 300h hybrid gets 44 MPG city and 45 MPG highway, but with less performance. Comparing the TLX MPG across all years is also important to understand its fuel efficiency evolution.

Tips to maximize efficiency

The 2018 Acura TLX has an “ECON” mode that changes the throttle response and transmission shift points to prioritize fuel efficiency. This mode softens acceleration and makes the transmission upshift sooner, keeping the engine in its most efficient range. While it might reduce responsiveness slightly, it can improve fuel economy, especially in city driving.

Regular maintenance is critical for the TLX to run efficiently. Make sure the tires are inflated to the correct pressure, as underinflated tires increase rolling resistance and waste fuel. Also, keep the engine tuned and change the air filter regularly to optimize combustion and maximize efficiency.

Driving aggressively, like accelerating quickly and braking hard, uses much more fuel. Smooth and consistent driving can greatly improve your MPG. Watch traffic flow, keep a steady speed, and avoid unnecessary acceleration to lower fuel use. The TLX may encourage spirited driving, but restraint saves money at the pump.

Reduce your use of accessories that tax the engine, such as air conditioning and heated seats. These features make the ride more comfortable, but they also draw power from the engine, reducing fuel efficiency. Use them sparingly, especially on short trips, to save fuel. Plan routes to avoid heavy traffic, as stop-and-go driving wastes fuel.

Consider using cruise control on long highway trips. Cruise control helps optimize fuel efficiency by keeping a constant speed. Be aware of traffic and avoid using cruise control when frequent speed changes are needed. Learn more about all Acura fuel economy data to make an informed decision about fuel efficiency.