Reverse for 'car_details' with arguments '('',)' not found. 1 pattern(s) tried:

In Views.py
def car_details(request, id):
redirect_to=1
single_car = get_object_or_404(Car, pk=id),
id = 1
data = {
'single_car': single_car,

# 'url': url,

}

reverse('single_car', args=(id))

return render(request, 'cars/car_details.html', data)

In urls.py of my app
urlpatterns = \[
path('', views.cars, name='cars'),  
path('\<int:id\>/car_details', views.car_details, name='car_details'),
\]
and In my templates cars.html  
for car in cars %}`your text`

<h1>
<a href="{% url ">{{car.car_title}}</a>
</h1>
<a href="{% url ">
{{car.state}}, {{car.city}}
</a>
endfor %}
when i tried to call this car_details.html with urls function it show me this error
Reverse for 'car_details' with arguments '('',)' not found. 1 pattern(s) tried:
I also tried with reverse function it doesnot work,How can I solve this error
in models.py
class Car(models.Model):
 id=models.IntegerField(primary_key=True,default=True)    
def __str__(self):
return self.car_title

Reverse for 'car_details' with arguments '('',)' not found. 1 pattern(s) tried: and I tried to call the Templates in my urls in a loop but shows me this error

{% url  "car_details" xxx %}