Trends · data through September 2026

Auto Parts Stores in Portland-South Portland, ME

Iceflower tracks 59 stores from 18 auto parts store chains in Portland-South Portland, ME. Tire Warehouse grew fastest over the last year, ahead of AutoZone and O'Reilly Auto Parts.

Rankings come from real card and bank transactions across a panel of 130M+ US and EU consumers. We publish relative growth and rankings, never revenue figures. About the data

Tracked chains
18
Tracked stores
59
Consumer panel
130M+

Growth ranking

Fastest-growing tracked auto parts store chains

Ranked by year-over-year growth of share of tracked local spend. Arrows show movement in the rankings since last year. Each dot in the chart is one tracked chain: bigger market position to the right, faster growth higher up, more tracked stores in a bigger dot. Colors match the store map below. Tire Warehouse and AutoZone sit in the high-growth half.

# Chain YoY growth
RankChainRank movementYoY growth
1 T Tire Warehouse ▲1 +9.5%
2 A AutoZone logo AutoZone - +1.3%
3 O O'Reilly Auto Parts logo O'Reilly Auto Parts - +1.2%
4 A Advance Auto Parts logo Advance Auto Parts - +0.6%
5 N NAPA Auto Parts logo NAPA Auto Parts - -7.3%
6 P Paulin's Tire & Auto Care ▼1 -14.2%
  • O'Reilly Auto Parts
  • NAPA Auto Parts
  • Patriot Subaru
  • Advance Auto Parts
  • AutoZone
  • Tire Warehouse
  • Paulin's Tire & Auto Care
  • Other tracked chains

Store footprint

Store map

59 tracked store locations in Portland-South Portland, ME. The 7 largest tracked chains are highlighted.

  • O'Reilly Auto Parts (13)
  • NAPA Auto Parts (14)
  • Patriot Subaru (1)
  • Advance Auto Parts (7)
  • AutoZone (4)
  • Tire Warehouse (6)
  • Paulin's Tire & Auto Care (3)
  • Other tracked chains

Top tracked chains by store count

More trends

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