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So while Hyundai has made great strides in engine technology in the past few years, e.g. with the new I4 and V6 in the Sonata being competitive with those from Toyota and Honda in power, perhaps it is too big a leap for Hyundai to offer something like Honda's VCM right now. But in the future... who knows?
The botom line is MPG. The Sonata's peppy V6 gives 20 & 30 mpg. What competitor MDS or CDS engine gives better mpg with equal pep without having to spend thousands of dollars more for cost?
John
GM's first use of Displacement on Demand was in 1981 on the Cadillac V8-6-4 engine. GM's engine controller, based on engine load, signalled electro-mechanical actuators to engage or disengage rocker arms to permit or prevent engine valve operation, thereby deactivating cylinders. The system was capable of operation with 4, 6, or 8 cylinders
I also filled up the fuel tank and am now hearing that sloshing, perculating (sp?) sound when I brake and start up again.Don't remember it doing it during the test drive, it started after I filled the tank up.
Love the car though, I had an 01 GLS up until 2 yrs ago and traded on SUV ( now long gone).
Any other issues to watch for? Have the dealers been discussing these 2 noises at all and is there a fix?
> was in 1981 on the Cadillac V8-6-4 engine.
I didn't know that was ever actually implemented at all--wow. I do remember reading a Popular Mechanics article on GM's (specifically Calliac's) further endeavors on this line later in the 80s--that was the first time I heard of it. Cadillac even tried piggybacking a small engine (like a small 4-cylinder) onto a larger one. The large one would kick on and off as-needed like the hybrids today, and the car would cruise with the 4-cylinder. Obviously that one was never tried.
But I think it's important to be careful not to bash a technology simply because it was released years or even decades ago as a failed version by an American auto company at the low point of its competence. (Not that anyone was bashing the technology itself--it's just easy to to fall into that trap.) Look at what that thinking did to the progress of diesel engines in our country, thanks to Plymouth and closed minds who needed no more information. I personally would rather have a diesel and have the option to burn vegetable oil (and may still do that). Although CDT was implemented irresponsibly in 1981 just like diesel was before that, it showed that the technology was there, and technology has improved.
Well I do think I remember reading a statement from one of the DaimlerChrysler VP's that the MDS added about $50 to the cost of the production of the engine, but I can't find that statement now. So well-heard about the level of technology and cost, but considering the Magnum RT goes for under 30K and is a lot "more car" in terms of mechanics, it seems to be more of a savoir-faire/engineering know-how issue than actual production cost. Regarding BMW and others not all doing it (yet), it isn't every day that brand new engines are designed from the ground up, so I just figured that as long as you're doing that, why not include CDT. It's probably in the future, I realize there are constrainst like deadlines and getting a new car to market. At least Hyundai apparently isn't afraid to add new features admidstream.
And I meant Cylinder Deactivation Technology (CDT) by the way, not Cylinder Deactivation System. (And I spelled cylinder with 2 L's, not one!) It was late.
This technology is nolonger an experiment. It is now available in the new Malibu. Computers and engine controls have come a LONG WAY since the 70's.
and turn your radio up. I have never heard it again
after my test drive.
I've never felt the faint click in gas pedal, but I doubt
that it would bother me.
Check your mirrors though. My right one is loose, leaving
a slight gap. I am taking it in tomorrow to get fixed.
To answer your ? The 4 has plenty! of power. I live in a hilly town & I do notice that it bogs down a bit, but just a bit. So I think its a non issue.
You don't know how full the "full tank of gas" the dealer gave you was. Your city & highway mix will also have an affect on your MPG. Plus, your car is nowhere's near broken in.
However, if you expect to get better milage from your new Sonata compared to your old Elantra, you will be disappointed. The Sonata is bigger and heavier and has a larger engine. You'll use more fuel. But you'll have other comforts which you may find worth offsetting to a few MPG. Think of Caddy to Chev Impala. Both good cars, but Caddy has more comforts & Impala will give better MPG (usually).
all 6 cylinders when turning a corner.
The trip computer doesn't keep track of the gallons
used?
I have 1280 miles on my 6 cyl, and have gotten 25.4
mpg, about 80 % highway miles. I expect it will
get better, now that it is broken in.
Do you have any idea why that is?
I really doubt how much it can really contribute to fuel efficiency since at 60mph one is using only about 14hp. The engine wiil use as much gas as it takes to maintain a given speed no matter how many cylinders are activated. That's my HO.
#1 Hwy:15% Trip:291.7 miles Gals:16.077 MPG:18.14
#2 Hwy:0% Trip:256.7 miles Gals:15.761 MPG:16.28
#3 Hwy:30% Trip:198.0 miles Gals:9.174 MPG:21.58
#4 Hwy:95% Trip:436.2 miles Gals:16.277 MPG:26.80
#5 Hwy:95% Trip:482.0 miles Gals:16.447 MPG:29.31
#6 Hwy:95% Trip:390.7 miles Gals:15.621 MPG:24.96
#7 Hwy:95% Trip:298.2 miles Gals:10.898 MPG:27.36
#8 Hwy:95% Trip:460.5 miles Gals:16.053 MPG:28.69
#9 Hwy:70% Trip:390.1 miles Gals:16.214 MPG:24.06
#10 Hwy:65% Trip:373.8 miles Gals:15.090 MPG:24.77
Added a record in my book for the computer reading on #10: 24.6 MPG. Less than 0.2 MPG difference. I'm on my 11th tank of gas now, and have about 3700 miles on the car. Went on two trips, but otherwise have local city driving only. So far, no problems with the car, and it has been a sheer joy to use. Even the much maligned seats feel just fine to me. Sure, I have few little minor annoyances like with the seat belt chime and the lack of a steering wheel audio channel/station control, but those things are no biggies. The responsive power, smootheness, quiet ride, superior handling, safety features, visibility, and style of my 2006 Sonata make this the best car I've ever had. The superior warranty and relatively low cost compared to similar cars I looked at make it even that much better, IMHO. :shades:
difference on the mpg. I'll crosscheck mine after I get a few more miles. I am pretty happy with mine too, but unfortunately I am one of the ones whose body does not agree with the seat. A cushion I got seems to help. OK around town, but long trips, over 100 miles, are really
painful.
Malibu has V6's only. The GM V8 that has the Cylinder De-activation is the 5.3L V8 used on their Grand Prix GXP and the new Impala SS.
BTW, this feature normally gives about 10% improvement on fuel effiency. Having 6 speed would save abut 6-7 % (vs. 4 Speed). But overall, mass reduction probably helps quite a bot too.
jt
I couldn't agree more. Those chimes drive me nuts. Does anyone know which wire to pull to stop it?
John
i am so used to putting on seat belt as soon as i get in the car that i dont' need any chime to remind me. but my habit is to start the car and then put on the seat belt. so the chime is irritating :mad: . hope meddling with the wires doesn't void any warranty :confuse:
$8000.00 !
I wish Motor Trend had compared the LX Sonata to that Accord EX. Heck, for that money, the Accord EX should be in the same boat with the Azera!
The test suggested Hyundai very closely copied/matched the Sonata to the Camry. Seems like they did the same with the Azera and Avalon too.
The Fusion and the Accord are both significantly smaller inside than the Sonata. The Camry is a little smaller for passengers than the Sonata too. I think that should have carried a little more weight in the comparison test.
Er...gee that's not very good. Perhaps you meant a zero to quarter mile time?
'
2011 Hyundai Sonata, 2014 BMW 428i convertible, 2015 Honda CTX700D
BTW, you mentioned convertable. At the one dealership that we stopped at, they had this beautiful gray Sonata with a 'simulated convertable' top. It wasn't actually a convertable, but it had a 'rag' covering on the roof to make it look like a convertable. It was really SHARP, but a $1400 option.
Still undecided on the sunroof.
Forget about the fake convertible top. Unless you're over 70 years old.
John
Nope. Cars a half century ago were slugs compared to even entry-level cars of today. The "Ford-o-Matic" transmission was nominally a three-speed unit behind a very inefficient torque converter. (a collaborative effort with Borg-Warner based on that company's prior design and used in Studebakers) In normal driving these trannies started in 2nd gear, not 1st which could only be engaged by manually shifting to it. (really intended for dead starts when negotiating steep hills and/or pulling a trailer) There was no torque converter lockup, nor was there an overdrive ratio. The "Thunderbird" V8 (thickwall cast iron for block and heads with the block skirt extending below the crankshaft centerline - Ford's signature "Y-Block V-8" design (very rigid, very durable, but very heavy) of that era required leaded premium and had a thunderous power rating of 170 hp carrying an 8.8:1 compression ratio. Even at that, "Uncle Tom" marveled at the Ford's performance.
2011 Hyundai Sonata, 2014 BMW 428i convertible, 2015 Honda CTX700D
I have had cars with and without. I had two Ford Probes
with them. My current CRV has one. I guess some people
love them, but I don't know why. You are right about
the convertibles though. My first 3 cars were all convertibles, and then I started into the family cars,
until I got divorced. The 68 yellow Pontiac
FIrebird convertible I owned was one of favorites of
all the cars I've owned.
lowering the seat. I have mine raised to the highest
possible position, and use a 2 inch cushion. This
is the only way I can sit comfotably for more than
30 minutes. If you decide on the sunroof, I
suggest you take a long test drive with the seat in
that position, and then sit in the car a while more.
Otherwise you might be throwing money out that sunroof.