British Rail Class 170
Current fleet details

Class
Operator
Number
Built
Carriages
Unit nos.
170/1
CrossCountry
17
1998–99
3
170101–110
170/1
CrossCountry
17
1998–99
2
170111–117
170/2
Greater Anglia
8
1999
3
170201–208
170/2
Greater Anglia
4
2002
2
170270–273
170/3
Abellio ScotRail
4
2004
3
170393–396
170/3
CrossCountry
2
2002
3
170397–398
170/4
Abellio ScotRail
22
1999–01
3
170401–420, 170470–471
170/4
Abellio ScotRail
10
2003–04
3
170425–434
170/4
Abellio ScotRail
2004–05
170450–170452
3
-
170/4
Northern
16
2004–05
3
170453–461, 170472–478
170/5
West Midlands Trains
17
1999–00
2
170501–517
170/5
CrossCountry
6
1999–00
2
170518–523
170/6
West Midlands Trains
6
2000
3
170630–635
170/6
CrossCountry
4
2000
3
170636–639

Question: How many units are in 3-car units?
Answer: Ten units (170101-110) are 3-car units, and the remaining seven units (170111-117) are 2-car units.