[Fulltiming]

There have always been variability in the size of the water and the holding tanks in Newells depending on the customer's desires even though Newell has had 'standard' tank sizes at various times 143 gal has been a frequently used tank size.

Reported tank capacities
2021 #1695 184 gal water & 184 gal waste
2019 #1664 143 gal water & 143 gal waste
2016 #1541 143 gal water & 143 gal waste
2016 #1532 180 gal water & 180 gal waste
2015 #1517 184 gal water & 184 gal waste
2014 #1498 143 gal water & 143 gal waste
2010 #1401 143 gal water & 143 gal waste
2008 #1239 143 gal water & 143 gal waste
2006 #764 143 gal water & 143 gal waste
2005 #724 160 gal water & 160 gal waste
2003 #648 163 gal water
2003 #647 198 gal water & only 124 gal of waste
2003 #646 190 gal water
2002 #636 165 gal water
2001 #593 142 gal water
2001 #591 160 gal water & 150 gal waste
2001 #589 160 gal water & 160 gal waste
2001 #586 160 gal water & 160 gal waste
2001 #582 142 gal water & 160 gal waste
1999 #525 150 gal water & 150 gal waste
1999 #521 150 gal water & 150 gal waste
1998 #499 200 gal water & 200 gal waste
1997 #462 160 gal water & 160 gal waste
1996 #431 175 gal water & 182 gal waste
1995 #377 168 gal water
1995 #375 173 gal water & 169 gal waste
1993 #312 168 gal water & 173 gal waste (67 gal propane, 314 gal fuel)

Based on Build Sheets
2019 #1639 and 2015 #1512 build sheets listed standard 143 gal each, optional 180 gal each

Based on Floorplan
2015 #1500 floorplan shows 184 gal each
2011 #1412 build sheet is silent on water/waste tank capacity but the floorplan/elevation plan shows 143 gal for each.
2007 #1204 and 2021 #1712 floorplans show 143 gal for each
2006 #786 floorplan shows 142 gal for each
2002 #636 floorplan shows 161 gal for each 234 gal fuel
1997 #463 floorplan shows 161 gal water and waste and 278 fuel
1996 #416 floorplan shows 153 gal water and 150 gal waste