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Year Make/Model Repair Frequencysuccessful repair trips per 100 cars per year Compared to all models for the same year  
2014 BMW 5-Series 30 5-Series, 8.9 months of data per 5-Series, average 7700 miles13
10% 10% Fewest Trips Most Trips
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2013 BMW 5-Series 27 5-Series, 9.9 months of data per 5-Series, average 21400 miles18
10% 10% Fewest Trips Most Trips
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2012 BMW 5-Series 26 5-Series, 9.9 months of data per 5-Series, average 31900 miles37
40% 40% Fewest Trips Most Trips
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2011 BMW 5-Series 50 5-Series, 7.8 months of data per 5-Series, average 43400 miles

First year for F10 5-Series.
65
70% 70% Fewest Trips Most Trips
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2010 BMW 5-Series 29 5-Series, 9.9 months of data per 5-Series, average 64700 miles67
60% 60% Fewest Trips Most Trips
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2009 BMW 5-Series   24 5-Series, 7.5 months of data per 5-Series, average 63500 miles

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2009 Nissan 370Z   17 370Zs, 9.8 months of data per 370Z, average 43200 miles

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2008 BMW 535 28 535s, 9.6 months of data per 535, average 80200 miles

Refreshed. First year for the turbocharged six in the 535i. Common turbo failures.
67
50% 50% Fewest Trips Most Trips
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2008 BMW 528 / 550 / M5 46 528 / 550 / M5s, 8.9 months of data per 528 / 550 / M5, average 82600 miles

Refreshed. First year for the turbocharged six in the 535i. Common turbo failures.
91
80% 80% Fewest Trips Most Trips
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2008 Nissan 350Z   11 350Zs, 9.6 months of data per 350Z, average 45300 miles

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2007 BMW 5-Series 31 5-Series, 8.3 months of data per 5-Series, average 94600 miles98
80% 80% Fewest Trips Most Trips
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2007 Nissan 350Z   11 350Zs, 9.4 months of data per 350Z, average 46600 miles

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2006 BMW 5-Series 36 5-Series, 9.6 months of data per 5-Series, average 95100 miles101
80% 80% Fewest Trips Most Trips
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2006 Nissan 350Z   11 350Zs, 8.5 months of data per 350Z, average 61900 miles

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2005 Nissan 350Z   15 350Zs, 9.8 months of data per 350Z, average 69600 miles

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2004 BMW 5-Series 25 5-Series, 10.0 months of data per 5-Series, average 97000 miles

First year for E60 5-Series.
86
50% 50% Fewest Trips Most Trips
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2004 Nissan 350Z 29 350Zs, 8.7 months of data per 350Z, average 80000 miles

Like other sports cars, low average odometer reading.
38
0% 0% Fewest Trips Most Trips
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2003 BMW 5-Series 27 5-Series, 7.3 months of data per 5-Series, average 109200 miles85
40% 40% Fewest Trips Most Trips
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2003 Nissan 350Z 27 350Zs, 10.2 months of data per 350Z, average 99800 miles

First model year.
91
50% 50% Fewest Trips Most Trips
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2002 BMW 5-Series 35 5-Series, 9.3 months of data per 5-Series, average 115900 miles119
80% 80% Fewest Trips Most Trips
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2001 BMW 5-Series   20 5-Series, 9.1 months of data per 5-Series, average 128400 miles

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2000 BMW 5-Series   15 5-Series, 9.2 months of data per 5-Series, average 143500 miles

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Nissan 350Z / 370Z vs. BMW 5-Series Reliability Comparisons

You won't find Nissan 350Z / 370Z or BMW 5-Series 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 BMW 5-Series truly differ in reliability.

These stats are promptly updated four times a year, to much more closely track Nissan 350Z / 370Z and BMW 5-Series reliability as the cars age. Others tell you how reliable the Nissan 350Z / 370Z and the BMW 5-Series 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 BMW 5-Series 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 323-horsepower 3.7L V6
7-speed shiftable automatic RWD
Very reliable, have not had long enough to evaluate durability.
2007 2dr Convertible 323-horsepower 3.7L V6
7-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 So far no problems.
2005 2dr Hatch 323-horsepower 3.7L V6
7-speed shiftable automatic RWD
nissans have always been know to be well built and reliable.
2004 2dr Hatch 323-horsepower 3.7L V6
7-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 323-horsepower 3.7L 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.
2004 2dr Hatch 323-horsepower 3.7L 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 323-horsepower 3.7L V6
7-speed shiftable automatic RWD
never had to do any major repairs on my Z
2003 2dr Hatch 323-horsepower 3.7L V6
6-speed manual RWD
My car has 50k on it and it was heavily track used by the previous owner. Basically no problems or major repairs. Pwr steering pump went out, given it was a first year model, notorious for bugs. After that, only needed new tires.
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 BMW 5-Series

BMW 5-Series Reliability and Durability: Pros
YearBody/PowertrainComment
2008 4dr Sedan turbocharged 240hp 2.0L I4
8-speed shiftable automatic AWD
Tremendous warranty which includes annual oil change and inspection paid for by dealer. ANY problems are fixed at no charge to customer.
2008 4dr Sedan turbocharged 300hp 3.0L I6
8-speed shiftable automatic AWD
Full service for first 4 years.
2007 4dr Sedan turbocharged 443hp 4.4L V8
8-speed shiftable automatic RWD
No problems in 15,000 miles
2007 4dr Sedan 268-horsepower 3.0L I6
6-speed manual RWD
Very good reputation.
2005 4dr Sedan turbocharged 300hp 3.0L I6
8-speed shiftable automatic RWD
Tried and true inline 6 cylinder engine.
2002 4dr Sedan turbocharged 240hp 2.0L I4
8-speed shiftable automatic RWD
Very little rust after 8+ years coupled with top notch materials lasting quite a long time. Replacement parts were very costly but performed for long periods. Current owners offer great advice on what and when to perform preventative maintenance.
BMW 5-Series Reliability and Durability: Cons
YearBody/PowertrainComment
2011 4dr Sedan turbocharged 300hp 3.0L I6
8-speed shiftable automatic RWD
- accelerator response (hesitation) - engine issues (check engine light requiring three service visits in two months) - engine malfunction light (part of turbo came disconnected) - faulty fuel sensor (recall first three months of new model year)
2010 4dr Sedan turbocharged 300hp 3.0L I6
8-speed shiftable automatic RWD
Terrible reputation for poor reliability and absurdly high repair costs as early as 50,000 miles.
2010 4dr Sedan turbocharged 300hp 3.0L I6
8-speed shiftable automatic RWD
Unbelievable maintenance after 50K miles, cost and effort.
2005 4dr Sedan turbocharged 443hp 4.4L V8
8-speed shiftable automatic RWD
Over 80K many systems were beginning to break down
2004 4dr Sedan turbocharged 300hp 3.0L I6
6-speed manual RWD
Had several repairs the first month of ownership that were covered by CPO warranty...love that BMW CPO
2002 4dr Sedan turbocharged 300hp 3.0L I6
8-speed shiftable automatic RWD
This car is known to have a plethora of problems. I have yet to see if it will hold up well for me.
2002 4dr Sedan turbocharged 443hp 4.4L V8
8-speed shiftable automatic RWD
I picked the above "reason" because it's the worst feature of an otherwise perfect vehicle. The durability of the interior is quite frankly an embarassment. I've lost the buttons for max for the heater, up for the driver side temerature, and the top button for the airflow direction .... don't ask me where they went, they just disappeared! I've broken the drivers side cup holder (and come on ... how pathetic are those cup holders!), and once it breaks, it no longer clicks back into the closed position so now I have a half a cup holder sticking out. One other grievance relating to interior durability ... the plastic footrest (left foot) down below the hood lever also fell apart. The plastic just broke away in
2001 4dr Sedan turbocharged 300hp 3.0L I6
8-speed shiftable automatic RWD
dealer ship as a mess