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Year Make/Model Repair Frequencysuccessful repair trips per 100 cars per year Compared to all models for the same year  
2015 Hyundai Sonata 43 Sonatas, 4.5 months of data per Sonata, average 4900 miles25
30% 30% Fewest Trips Most Trips
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2014 Chevrolet Impala   21 Impalas, 10.2 months of data per Impala, average 15600 miles

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2014 Hyundai Sonata 28 Sonatas, 8.4 months of data per Sonata, average 11500 miles15
10% 10% Fewest Trips Most Trips
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2013 Hyundai Sonata 59 Sonatas, 9.8 months of data per Sonata, average 27500 miles25
20% 20% Fewest Trips Most Trips
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2012 Hyundai Sonata 51 Sonatas, 8.2 months of data per Sonata, average 38800 miles23
20% 20% Fewest Trips Most Trips
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2011 Hyundai Sonata 101 Sonatas, 8.4 months of data per Sonata, average 54400 miles

Redesigned for this model year.
41
40% 40% Fewest Trips Most Trips
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2010 Hyundai Sonata   20 Sonatas, 8.6 months of data per Sonata, average 65100 miles

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2009 Hyundai Sonata 51 Sonatas, 9.9 months of data per Sonata, average 73500 miles36
20% 20% Fewest Trips Most Trips
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2008 Chevrolet Impala   15 Impalas, 9.6 months of data per Impala, average 114000 miles

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2008 Hyundai Sonata   19 Sonatas, 10.7 months of data per Sonata, average 94500 miles

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2007 Chevrolet Impala / Monte Carlo   14 Impala / Monte Carlos, 9.3 months of data per Impala / Monte Carlo, average 113200 miles

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2007 Hyundai Sonata 29 Sonatas, 9.4 months of data per Sonata, average 101400 miles48
30% 30% Fewest Trips Most Trips
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2006 Chevrolet Impala / Monte Carlo   10 Impala / Monte Carlos, 9.9 months of data per Impala / Monte Carlo, average 113400 miles

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2006 Hyundai Sonata 46 Sonatas, 9.2 months of data per Sonata, average 111400 miles

Redesigned for this model year.
91
70% 70% Fewest Trips Most Trips
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2005 Chevrolet Impala / Monte Carlo   11 Impala / Monte Carlos, 9.5 months of data per Impala / Monte Carlo, average 118300 miles

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2005 Hyundai Sonata   10 Sonatas, 8.6 months of data per Sonata, average 113100 miles

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2004 Chevrolet Impala / Monte Carlo   13 Impala / Monte Carlos, 7.6 months of data per Impala / Monte Carlo, average 107500 miles

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2004 Hyundai Sonata   17 Sonatas, 7.8 months of data per Sonata, average 128400 miles

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2003 Chevrolet Impala / Monte Carlo   15 Impala / Monte Carlos, 9.1 months of data per Impala / Monte Carlo, average 107000 miles

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2002 Chevrolet Impala / Monte Carlo   13 Impala / Monte Carlos, 6.1 months of data per Impala / Monte Carlo, average 135500 miles

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See reliability results for all Sedans.
See reliability results for all Chevrolet and Hyundai vehicles.

Chevrolet Impala vs. Hyundai Sonata Reliability Comparisons

You won't find Chevrolet Impala or Hyundai Sonata reliability information like this anywhere else. Actual repair frequencies, not just vague dots, to make it clear how much the Chevrolet Impala and the Hyundai Sonata truly differ in reliability.

These stats are promptly updated four times a year, to much more closely track Chevrolet Impala and Hyundai Sonata reliability as the cars age. Others tell you how reliable the Chevrolet Impala and the Hyundai Sonata were a year ago, when the cars were a year younger and had 12,000 fewer miles on them. Only TrueDelta tells you how reliable the Chevrolet Impala and the Hyundai Sonata have been recently.

What People Are Saying about Reliability and the Chevrolet Impala

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What Our Members Are Saying about the Reliability and Durability of the Chevrolet Impala

Chevrolet Impala Reliability and Durability: Pros
YearBody/PowertrainComment
2009 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
Quite solid. has a good reliability reputation (and my experience bears that out)
2007 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
Rock solid, roomy, reliable. Chevy knows how to build a car. Affordable for a family on a budget, great gas mileage. This is teh 2nd Impala we have owned, and almost certainly there will be a third.
2006 4dr Sedan 305-horsepower 3.6L V6
6-speed shiftable automatic FWD
when you have to do 50km or a 1300km weektrip, you know you will come back!
2006 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
absolutely trouble free
2006 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
Powertrain is excellent. Fuel economy surprisingly good.
2004 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
We bought this car used already had 110,000 miles now over 210,000 miles drive daily no mechanical problems other than a new transmission which was just replaced at 195,000.
2004 4dr Sedan 305-horsepower 3.6L V6
6-speed shiftable automatic FWD
Car was having oil leak into the radiator, major engine overhaul required.
2004 4dr Sedan 305-horsepower 3.6L V6
6-speed shiftable automatic FWD
Relatively minor problems.
2004 2dr Coupe 230-horsepower 3.6L V6 Natural Gas
6-speed shiftable automatic FWD
Everything great car no problems
Chevrolet Impala Reliability and Durability: Cons
YearBody/PowertrainComment
2008 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
Electrical component failures caused by poor body assembly and sealing. GM will not warranty BCM or under hood fuse panel that failed by "environmental conditions" (snow & Ice & rain) Poor engineering.
2008 4dr Sedan 305-horsepower 3.6L V6
6-speed shiftable automatic FWD
The above mentioned transmission problem has started when the car reached about 30,000 miles and 1 year old.
2008 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
Had to replace wiper motor and body computer module in less than 2 years with no aid from dealer or Chevrolet. $1150 that could have been caused by using the windshield wipers in the winter time. De
2008 4dr Sedan 305-horsepower 3.6L V6
6-speed shiftable automatic FWD
Thus far, have had problems with the gas cap (the P0455 fault), the speakers rattle, two of the four power door locks have failed, and the gas gauge has gone on the fritz.
2007 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
Car has been in more than twice a month for the last three years. Everything that can break has.
2007 4dr Sedan 305-horsepower 3.6L V6
6-speed shiftable automatic FWD
I have had 4 service items performed within the first 3 years of ownership. Unremarkable reliability.
2005 4dr Sedan 196-horsepower 2.5L I4
6-speed shiftable automatic FWD
We had a lot of little repairs. In 120K miles, 3 water pumps, power steering pump, cracked front cover, alternator, instrument cluster (speedometer, etc..), roof liner started sagging, A/C required a lot of maintenance, int trim coming off and much more.
2004 4dr Sedan 305-horsepower 3.6L V6
6-speed shiftable automatic FWD
Engine oil leaking into the coolant, required major overhaul of engine.
2002 4dr Sedan 305-horsepower 3.6L V6
6-speed shiftable automatic FWD
I had the front rotors warp every 3 to 6 months. I had to replace them at my cost as GM would not warranty them. The rear have now warped too. Both front wheel bearings had to be replaced as well as the tie rod ends. All within 70,000 miles. Very poor.
 

What Our Members Are Saying about the Reliability and Durability of the Hyundai Sonata

Hyundai Sonata Reliability and Durability: Pros
YearBody/PowertrainComment
2013 4dr Sedan 185-horsepower 2.4L I4
6-speed shiftable automatic FWD
So far the car has been great. I had a 2011 Sonata (which is the identical car) and put over 90,000km on it and then traded for the exact same car (a 2013) which now has 36000km. I have had no warrantee work done the either vehicle.
2013 4dr Sedan 185-horsepower 2.4L I4
6-speed shiftable automatic FWD
I have owned several new cars in my life - the 2013 Sonata is the first car with Zero issues - zip zero zilch - in the first year of ownership. It just works perfectly each and every time.
2012 4dr Sedan turbocharged 245hp 2.0L I4
6-speed shiftable automatic FWD
This car is not as reliable as japanese counterparts. Many isues since I bought car on 2011. Mainly A/C, Panroramic roof, and suspension problems. Hyundai could also do much better into training personnel to repair cars without so many visits to dealer. Seems not enough training into is put into repairing their products. I do not recommend this car (Sonata 2.0T) to anyone, since there are many other choices with better reliability and better service. I have owned: Lexus (best), Honda, Toyota. All these cars where much better in terms of reliability.
2011 4dr Sedan turbocharged 177hp 1.6L I4
7-speed automated manual FWD
5/60,000 bumper to bumper warrantee 10/100,000 - (for me, I got LIFETIME!!) drive train warranty
2011 4dr Sedan turbocharged 245hp 2.0L I4
6-speed shiftable automatic FWD
"It Has The Best Warranty In The Business."
2009 4dr Sedan turbocharged 177hp 1.6L I4
7-speed automated manual FWD
Long track record of major component reliability. The car will last without major issues for 5 years -statistically.
2009 4dr Sedan 185-horsepower 2.4L I4
6-speed manual FWD
Warranty: bumper to bumper for 5 years/60,000 miles.
2009 4dr Sedan 185-horsepower 2.4L I4
6-speed shiftable automatic FWD
Reputation for reliability and quality.
2009 4dr Sedan 185-horsepower 2.4L I4
6-speed shiftable automatic FWD
So Far so good with 13,000 miles. Knock on wood.
2008 4dr Sedan 185-horsepower 2.4L I4
6-speed shiftable automatic FWD
Bought with 41000 miles and no issues, now has over 750000 miles and no major issues
Hyundai Sonata Reliability and Durability: Cons
YearBody/PowertrainComment
2009 4dr Sedan turbocharged 177hp 1.6L I4
7-speed automated manual FWD
Suspension noises, Burning Rubber smell thrtough air vents, Faulty Electronics. So far; I am not please with the R & D of the car as I have spent over 23 Hours in the service waiting area in 6 Motnhs.
2006 4dr Sedan turbocharged 177hp 1.6L I4
7-speed automated manual FWD
if you are not the original owner i would sell before 90k miles
2004 4dr Sedan turbocharged 178hp 1.6L I4
6-speed shiftable automatic AWD
average at best. i never had as many repairs that were not simple wear-and-tear than on this vehicle.