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Nissan 370Z vs. Kia Optima Reliability by Model Generation

Results are for year ending September 30, 2016. 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 and Model Percent of Average  
2011 - 2015 Kia Optima
20.2857142857% Best 73% Worst
See problems for this generation
2003 - 2008 Nissan 350Z
10.5714285714% Best 56% Worst
See problems for this generation

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What Our Members Are Saying about the Reliability And Durability of the Nissan 350Z

Nissan 350Z 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 full 2009 Nissan 350Z review
2008 2dr Hatch 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
Very reliable, have not had long enough to evaluate durability. full 2008 Nissan 350Z review
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 full 2007 Nissan 350Z review
2006 2dr Convertible 300-horsepower 3.5L V6
6-speed manual RWD
So far no problems. full 2006 Nissan 350Z review
2005 2dr Hatch 287-horsepower 3.5L V6
5-speed shiftable automatic RWD
nissans have always been know to be well built and reliable. full 2005 Nissan 350Z review
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. full 2004 Nissan 350Z review
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. full 2004 Nissan 350Z review
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. full 2004 Nissan 350Z review
2004 2dr Hatch 287-horsepower 3.5L V6
5-speed shiftable automatic RWD
never had to do any major repairs on my Z full 2004 Nissan 350Z review
2003 2dr Hatch 287-horsepower 3.5L V6
6-speed manual RWD
Its engineered to last and the parts are reasonable, not cheap, but reasonable full 2003 Nissan 350Z review
Nissan 350Z 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. full 2011 Nissan 350Z review
Nissan 350Z Reliability And Durability: Neutral
YearBody/PowertrainComment
2011 2dr Hatch 332-horsepower 3.7L V6
6-speed manual RWD
Have had no problems with the vehicle which is used as a daily driver. 34,000 miles on the car. full 2011 Nissan 350Z review
 

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. full 2008 Kia Optima review
2008 4dr Sedan 162-horsepower 2.4L I4
5-speed manual FWD
Good general reliability, which is backed by an excellent warranty full 2008 Kia Optima review
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. full 2007 Kia Optima review
2005 4dr Sedan 170-horsepower 2.7L V6
4-speed shiftable automatic FWD
Have not had to call roadside service once in three years full 2005 Kia Optima review
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. full 2004 Kia Optima review