6.7

fairly significant
Typical Repair Cost:
No data
Average Mileage:
25,250 miles
Total Complaints:
3 complaints

Most common solutions:

  1. not sure (2 reports)
  2. return car (1 reports)
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This problem may be covered under warranty. Ask your Scion dealer.

problem #3

Oct 162023

iQ iQ 1.3L

  • CVT transmission
  • 74,565 miles

Does anyone know whit is the problem with this engine knock.

- Serge S., California Settlement, NB, Canada

problem #2

Apr 252012

iQ 1.3L

  • CVT transmission
  • 43 miles

The day I bought this car and drove it off the lot, this "warm-up" noise was present. Once warmed up it completely goes away. I even drove back to the carl lot and started up a new one still for sale......it made the same warm-up noise. Sounds like piston tapping or valve train noise, but since both my new one and another new one on the lot made the same noise during warm up, then this must be something that is inherently amiss with these 1.3 motors. I now have 1800 miles on it and it still makes the same noise, but maybe even a little louder now......I was trying to wait until the 5k service, but I think I will be taking it in sooner.....it really bothers me alot, and what really surprises me is that this is a Toyota product!

- Gilbert M., Aurora, CO, US

problem #1

Aug 192012

iQ 1.3L

  • CVT transmission
  • 1,001 miles

scion iq at 1000 mi heavy hammering noise in engine and dumping oil out of cylinder head after 3 to5 min it subsides upon warm up clearly a cracked cylinder head i see others are also having this problem hopes are for a buyback as an oil starved engine even if a new head is installed is still a damaged one

- garygray, Springfield, IL, US