Our Lincoln Town Cars (we've had 5, most recent a 2003 Signature series) wouldn't have gotten 28 mpg idling in neutral coasting down the side of Mt. Everest. Best ever mileage in any of ours was an even 20 with the cruise set at 65 on a fairly level stretch of interstate. I think someone's onboard computer has been taking LSD!! No car this big can get over 25mpg even if it were a hybrid.
To the previous comment: your 2003 is slightly bigger than a 2001. That means it weighs more; also, it has a 'blockier' style (which causes drag).
My 1999 Lincoln Town Car clocked 27.3 MPG driving from Seattle to San Francisco. I ran it only on Shell and Chevron Unleaded. In the city the vehicle gets me 21.2 MPG. I consider this exceptional for a full size yank tank boat. I would never jump into a Ford Taurus for 28 MPG when I can cruise in a Lincoln.
I have just purchased my 2001 Town car and love it! It has 93k Miles on it. I live in Brooklyn NY and it's a stop and go situation. I get 20 MPG in the city and when ever I drive out to Ohio I also get 26-28 MPG. Best part yet is insurance dropped by 30% from my previous car (Nissan Maxima). Love the ride, love the comfort and love the car!
I have a 2001 Signature. I love the car - It has an amazing ride, and actually handles very well for a large car. Fuel mileage is only about 16.5 in town though, and 22 on the freeway. Anyone who says they are getting 28 MPG out of these needs to check their actual miles traveled from full tank, then do a fill and calculate their REAL mileage- not the computer mileage. Absolutely NO possibility of getting 28 in this car! I have owned other full size fords (crown vic), same thing - 23 MPG was best I EVER have gotten.
I currently have a 2001. I had a 2000 for 5 years. I came back from Jackson, TN, to West Chester (Northern Cincinnati) on one tank of gas and calculated the mileage at 28 mpg. I ran 55 mph all the way because it was raining and the temperature was 33 degrees. These cars can get extraordinary mileage. Normal for me is around 20-21 on both cars. I think the 2001 get a little better mileage on the average.
Mom has driven Lincoln Town Cars since 1984. All have been totally flawless and have gotten better with each new purchase. I do, however, feel that 28 mpg for these cars is a bit of a stretch. Maybe driving only downhill or being towed. Mom's got 15-17 mpg. She down-sized to the Lincoln MKZ this time, and even it only gets 17-20 mpg.
I wouldn't exactly call 28 mpg extraordinary, although it is good for a large car with a V8. I have a Buick Park Avenue, and can get over 30 mpg on the highway at 70. To me though, I am not really concerned about fuel economy, but I do appreciate it. As a rule, buyers of large cars should not make fuel economy a priority.
Actually the large Buicks can get 32-33 mpg on the highway, and at a higher speed than you listed. However, as you pointed out, they only have a V6 and weigh about 300-500 lbs less than your car, depending if it is the Park Avenue or LeSabre model. Anyway, I was just pointing out in this day and age, 28 mpg is not extraordinary.
I have a 05 Crown Victoria, which I am guessing weighs less than the Town Car, but on 2 trips to La Crosse to visit my sister, the first time with the air conditioning on, I got 28.4 MPG. The second time I didn't have the air on, and the computer said I got 30.6, which I didn't believe, so I did it by hand, and it was pretty close. When I did it by hand, it came out to 30.3. I have the cruise set at 73 for the entire 2 hour trip, which using the cruise helps a lot.
Anyways, my grandpa had Lincolns, and they were such great cars. I graduate college in 2 months, when it's time to get a new car, it will for sure be a Town Car!