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Nissan 350Z / 370Z vs. Kia Optima Reliability

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Results are for year ending December 31, 2015. Only successfully completed repairs are currently included in the analysis. Routine maintenance, most wear items, recalls, and problems fixed with just a reflash or warning light reset are not included.
Year Make/Model Repair Trips Per 100 Cars Compared to all models for the same year    
2014 Kia Optima   small sample, members only   see reported repairs
  13 Optimas, 9.2 months of data per Optima, average 15100 miles

* Very small sample, members only.

 

2013 Kia Optima 18
10% 10% Fewest Trips Most Trips
[?] see reported repairs
  51 Optimas, 10.2 months of data per Optima, average 33600 miles

 

2012 Kia Optima 32
30% 30% Fewest Trips Most Trips
[?] see reported repairs
  45 Optimas, 7.5 months of data per Optima, average 50100 miles

 

2011 Kia Optima 23
10% 10% Fewest Trips Most Trips
[?] see reported repairs
  26 Optimas, 7.9 months of data per Optima, average 52800 miles

Redesigned for this model year.

 

2009 Nissan 370Z   small sample, members only   see reported repairs
  14 370Zs, 9.3 months of data per 370Z, average 52100 miles

* Very small sample, members only.

 

2008 Nissan 350Z   small sample, members only   see reported repairs
  11 350Zs, 8.4 months of data per 350Z, average 54700 miles

* Very small sample, members only.

 

2007 Nissan 350Z   small sample, members only   see reported repairs
  11 350Zs, 11.2 months of data per 350Z, average 47700 miles

* Very small sample, members only.

 

2006 Nissan 350Z   small sample, members only   see reported repairs
  13 350Zs, 11.0 months of data per 350Z, average 69700 miles

* Very small sample, members only.

 

2005 Kia Optima   small sample, members only   see reported repairs
  10 Optimas, 9.9 months of data per Optima, average 103700 miles

* Very small sample, members only.
2005 Nissan 350Z   small sample, members only   see reported repairs
  17 350Zs, 7.6 months of data per 350Z, average 61500 miles

* Small sample, members only.

 

2004 Kia Optima   small sample, members only   see reported repairs
  12 Optimas, 9.1 months of data per Optima, average 134600 miles

* Very small sample, members only.
2004 Nissan 350Z 42
0% 0% Fewest Trips Most Trips
[?] see reported repairs
  26 350Zs, 8.7 months of data per 350Z, average 76900 miles

Like other sports cars, low average odometer reading.

 

2003 Nissan 350Z 82
40% 40% Fewest Trips Most Trips
[?] see reported repairs
  27 350Zs, 7.6 months of data per 350Z, average 103800 miles

First model year.

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Nissan 350Z / 370Z vs. Kia Optima Reliability Comparisons

You won't find Nissan 350Z / 370Z or Kia Optima reliability information like this anywhere else. Actual repair frequencies, not just vague dots, to make it clear how much the Nissan 350Z / 370Z and the Kia Optima truly differ in reliability.

These stats are promptly updated four times a year, to much more closely track Nissan 350Z / 370Z and Kia Optima reliability as the cars age. Others tell you how reliable the Nissan 350Z / 370Z and the Kia Optima 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 Nissan 350Z / 370Z and the Kia Optima have been recently.

What People Are Saying about Reliability and the Nissan 350Z / 370Z

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What Our Members Are Saying about the Reliability and Durability of the Nissan 350Z / 370Z

Nissan 350Z / 370Z Reliability and Durability: Pros
YearBody/PowertrainComment
2009 2dr Hatch 332-horsepower 3.7L V6
6-speed manual RWD
My last two Nissans have each gone over 150,000 miles. Both were easy keepers, reliable, and inexpensive to service. I expect the same from this one. Servicing costs on the Cayman are a nightmare by comparison, despite long recommended service interval
2008 2dr Hatch 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
Very reliable, have not had long enough to evaluate durability.
2007 2dr Convertible 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
I drove this car in 15 degree weather, It cranked up the same as 80-90 degree days
2006 2dr Convertible 300-horsepower 3.5L V6
6-speed manual RWD
So far no problems.
2005 2dr Hatch 287-horsepower 3.5L V6
5-speed shiftable automatic RWD
nissans have always been know to be well built and reliable.
2004 2dr Hatch 287-horsepower 3.5L V6
6-speed manual RWD
I bought mine with about 160,000 miles on it kind of as a toy as I didn't anticipate having a 400 mile a week commute. Through all that though it has been dead reliable. Here are the only issues I've had with it: - Clutch needed to be bled as pedal would sink to floor in hot weather (still operable though) - Replaced/upgraded brakes - Alignment was way out of whack and feathering front tires (common problem) - Driver's side window motor failed the day I bought it (fixed obviously, common problem, no issues since with OEM Nissan replacement) - Trunk latch and dampers were shot and needed to be replaced It starts up and runs like clockwork. I could see this car going another 100K miles in the hands of the right owner.
2004 2dr Hatch 287-horsepower 3.5L V6
5-speed shiftable automatic RWD
never had to do any major repairs on my Z
2004 2dr Hatch 287-horsepower 3.5L V6
5-speed shiftable automatic RWD
Relatively cheap to maintan for a sportscar. Nissan engines can run pretty high in mileage and be just fine.
2004 2dr Hatch 287-horsepower 3.5L V6
6-speed manual RWD
Strong, durable engine and drivetrain. Have only had standard maintenance - no repairs. This includes taking the car to the track and autocross on occasion.
2003 2dr Hatch 287-horsepower 3.5L V6
6-speed manual RWD
Nissan has a decent reputation for quality. After doing copious research I found the 350Z to have pretty darn good reliability for a sports car.
Nissan 350Z / 370Z Reliability and Durability: Cons
YearBody/PowertrainComment
2011 2dr Hatch 332-horsepower 3.7L V6
6-speed manual RWD
Engine is a hit or miss with oil consumption.
 

What Our Members Are Saying about the Reliability and Durability of the Kia Optima

Kia Optima Reliability and Durability: Pros
YearBody/PowertrainComment
2008 4dr Sedan 162-horsepower 2.4L I4
5-speed shiftable automatic FWD
I researched online and spoke with Optima owners. Kia has come a long way in reliability in the past few years. I was surprised by the level of owner loyalty. People who own Optimas enthusiastically recommend them.
2008 4dr Sedan 162-horsepower 2.4L I4
5-speed manual FWD
Good general reliability, which is backed by an excellent warranty
2007 4dr Sedan 185-horsepower 2.7L V6
5-speed shiftable automatic FWD
I have had zero problems with the car. Trim and everything is just like new.
2005 4dr Sedan 170-horsepower 2.7L V6
4-speed shiftable automatic FWD
Have not had to call roadside service once in three years
2004 4dr Sedan 138-horsepower 2.4L I4
5-speed manual FWD
Have had 0 problems until just recently the clutch pressure plate broke! $800 to fix and not under warranty! Not happy about that.