Those are good numbers, I am averaging about 46 mpg but Fuelly.com will give you a lot more data points for the CT and you can see individual city/hwy % to determine their driving conditions. You can compare both cars mpg .
I drive pretty conservatively and average a calculated 48 mpg. If there's more highway miles then it tends to be lower as my sweet spot is around 70 mph and on long hauls it's a bit tiresome keeping that pace. Your TDI seems to be doing just fine so I wouldn't get another car if you're average is 41.8 mpg. I go about 400 miles between fill-ups.
do you go fast (75mph) on the highway, or stick to around 60mph?
are you stuck in stop and go traffic a lot?
are you heavy footed? (probably are, because you have a TDI and all of that low end torque, the CT will feel very sluggish)
IMO, you are better off with another TDI because you do quite a bit of hwy driving, and your mileage is very good with the one you have right now.
The CT to me would really shine if your drive way much more city, or the highway is all stop and go.
We've had our CT for about 40k miles now so it's gotten it's share of miles on the road. When we bought her new, the MPG was hovering around 45 but now that's it's fully broken in the mpg average is around 48-52.
A lot of it really depends on how you drive, with this car there is no torque unlike your diesel so keep that in mind. This is my wife's car so when I do drive it, I'm used to torque (my dd is a v8 m3) so I tend to average less mpg (about 42) vs when she drives. You really can't count on torque so you have to plan your drive to build momentum.
Here in CA we have a lot of mountains and hills so if you are going incline for one section, you can watch your MPG drop as much as 3 in a short stint. It's a fun car to drive if your commute is mostly flat and stop/go traffic.
So bottom line is if you prefer torque, stick with your diesel, forget about the CT.
The CT shines when:
a) stop and go traffic on highway
b) do not go fast (under 70mph)
c) flat ground is best (no hills)
d) drive conservatively (meaning no passing or hard acceleration)
e) running errands around town
i do 80% highway and my lifetime average on the dash display (which i have never reset since taking delivery) is 39.9mpg. i don't usually drive in times of traffic so i am talking about 75-80mpg on the highway, so i am one of the ones who is going to get the 40hwy mpg vs. the 43 city.
not terrible and we like the hatchback. we also have two car seats in the back for when i need to have them in there.
i'd probably be better off in a diesel given my driving conditions, but there were none that really called out to me 3 years ago, and the CT is actually pretty fun to drive and compact. and IMHO looks sporty and beautiful.
so yeah, i'd stick with the diesel! the new A3 sedan looks sweet, but i just wonder how tiny it will be ... i had a B7 A4 and that was already pretty cramped in the back!
2011 CT200h Premium Starfire Pearl/black - July 2011
2013 Mercedes Benz GL550 Steel Grey/black - May 2013
So I only have about 2,300 miles on my new CT and it's only been driven in winter temps so far. My accumulated average mpg since day one is 43.5 mpg. Figuring it's about 2 mpg optimistic, that puts me at 41.5 for real world mpg. Doing the math when I fill up has shown anywhere from 40 to 43 mpg. So yeah, I'm going with 41.5 mpg. I'm looking forward to this number improving as the temp warms up and the car breaks in.
Just did my 65K service and lifetime average is 48.3 MPG on the computer. I don't know what is real MPG is as I have stopped calculating using fuel pump reading the odometer over a year ago... probably closer to 45 MPG.