Case study · Portland, Oregon

ID.4 vs. Tiguan in Portland.

A Portland software engineer already driving a Tiguan considers upgrading to VW's electric alternative. Every economic factor in Oregon stacks in the EV's favor: some of the highest gas prices in the country, one of the cheapest EV rate plans through PGE, and a $2,500 state rebate. The result is the most decisive EV win in our library — the ID.4 saves $9,374 over five years.

LocationPortland, OR · ZIP 97214
Annual miles14,000
Ownership horizon5 years
Purchase methodCash
UtilityPGE Electric Vehicle Time-of-Day
Last verified2026-Q3

The question

David is a 37-year-old software engineer at a Beaverton tech company. He lives in Southeast Portland's Sunnyside neighborhood, commutes to Beaverton three days a week (roughly 24 miles round trip through the tunnel), and does typical weekend errands and Cascades trips. His annual mileage settles at around 14,000 — moderate by American standards, low by Portland tech-worker standards.

David has driven a 2019 VW Tiguan for six years and has liked it. He's ready to upgrade. His question is whether to move to a 2025 Tiguan (safe, familiar, the vehicle he already knows) or the 2025 ID.4 (VW's electric alternative, roughly the same size and price bracket). He's already looked at Model Ys and Ioniq 5s, but wants to stay in the VW ecosystem — service is convenient, he trusts the brand, and his dealer knows him.

His constraints: 14,000 miles a year, cash purchase, five-year ownership horizon, and a garage at his home where a Level 2 charger could be installed for approximately $1,100 (single-family home, existing 200-amp panel — quote from Portland electrician). The comparison: 2025 VW Tiguan SEL R-Line AWD (gas) vs. 2025 VW ID.4 Standard RWD Pro (EV).

The vehicles

Gasoline

2025 VW Tiguan SEL R-Line AWD

$37,000

  • Combined MPG22
  • CategoryCompact crossover · AWD 2.0T
  • Depreciation model13% / yr (VW weaker retention)
Electric

2025 VW ID.4 Standard RWD Pro

$40,000

  • Efficiency33 kWh / 100 mi
  • CategoryCompact crossover · RWD
  • Depreciation model16% / yr (heavy post-2024 pricing correction)

The 5-year math

VW Tiguan VW ID.4
MSRP $37,000 $40,000
Depreciation (5-yr loss) $18,558 $23,272
Fuel or electricity (5-yr) $13,205 gasoline $1,617 electricity
Insurance (5-yr) $7,250 $8,000
Maintenance (5-yr) $3,000 $2,250
State incentive −$2,500 (Oregon Clean Vehicle Rebate)
5-year true cost to own $42,013 $32,639
Difference VW ID.4 wins by $9,374 — a decisive EV victory

Assumptions: Pacific Northwest gasoline at $4.15/gal (EIA PADD 5 average with Oregon's high state gas tax; Portland typically 5–8 cents/gal above the state average). PGE Electric Vehicle Time-of-Day rate blended at $0.070/kWh (85% super off-peak at $0.05/kWh, 10% off-peak at $0.10/kWh, 5% peak at $0.35/kWh — reflects typical overnight-heavy EV charging pattern). Insurance from Drive Economics's density-and-MSRP model for a Portland ZIP. Maintenance from make and category (VW mainstream gas with slightly higher-than-typical German-brand service costs; VW EV multiplier applied to ID.4). Depreciation is geometric. Tiguan 13%/yr reflects VW's weaker retention than Japanese or Korean competitors. ID.4 16%/yr reflects heavy post-2024 price cuts and inventory pressure. Oregon Clean Vehicle Rebate Program standard rebate is $2,500 for new EVs under $50,000 MSRP purchased or leased (some income-qualified households qualify for enhanced $5,000 rebate — not applied here). Federal EV tax credit expired September 30, 2025 and is excluded. See methodology.

The verdict

The ID.4 wins by $9,374 over 5 years — the most decisive EV victory in our current library. To understand why, look at what stacks together in Portland that doesn't stack anywhere else:

The ID.4 saves $11,588 in fuel cost alone. Oregon has among the highest gasoline prices in the country ($4.15/gal average, driven by state gas tax and West Coast supply constraints). PGE's Electric Vehicle Time-of-Day rate delivers among the cheapest overnight electricity in the country ($0.05/kWh super off-peak). The gap between paying $4.15 to move a 22-MPG vehicle a mile vs. paying $0.05/kWh to move a 33 kWh/100mi vehicle a mile is enormous when compounded over 70,000 miles.

The ID.4 also captures $2,500 from Oregon's Clean Vehicle Rebate Program — one of only a handful of state programs still active after the federal credit expired. It saves another $750 in maintenance. Total advantages: $14,838.

The ID.4 loses $4,714 in depreciation (VW aggressively cut ID.4 prices in 2024–2025, so retention has been weak) and $750 in insurance. Total disadvantages: $5,464.

Net: $14,838 in EV advantages minus $5,464 in EV disadvantages equals $9,374. Almost nothing in this comparison favors gas — even the depreciation gap doesn't come close to offsetting the fuel and incentive advantages.

What makes this case instructive is not that the ID.4 wins, but how completely the Oregon economics stack against gas. Two adjacent states with similar climates and demographics can produce dramatically different outcomes: Portland gives the ID.4 a $9,374 victory, while a similar Seattle comparison (Ioniq 5 vs. Tucson) landed within $370. The difference is not the vehicles or the driver — it's Oregon combining high gas prices, low EV electricity rates, and an active state rebate into a stack no other state currently offers at this magnitude.

What could change this

  • The Oregon rebate could expire or reduce. The Oregon CVRP has faced funding uncertainty in every biennial state budget cycle. If the $2,500 rebate disappears, the ID.4's advantage narrows to $6,874 — still decisive, but less dramatic.
  • Not enrolled in PGE's EV Time-of-Day rate. On the standard residential rate at $0.13/kWh, ID.4 electricity climbs from $1,617 to $3,003 over 5 years. That $1,386 increase reduces the advantage to $7,988 — still decisive.
  • Charging away from home frequently. Portland has extensive public DC fast charging, but public rates run $0.35–$0.50/kWh. A driver charging 30% publicly instead of overnight at home adds roughly $2,200 to 5-year electricity costs. Even then, the ID.4 wins by $7,150.
  • Home charger installation excluded. David's electrician quoted $1,100 for Level 2 install. Adding this to the EV side reduces the advantage to $8,274 — still decisive.
  • Comparing to a hybrid. Against a Toyota RAV4 Hybrid (39 MPG combined AWD), the fuel gap closes significantly. The ID.4 would still win, but by roughly $4,500 rather than $9,374.
  • Choosing the ID.4 Pro S or Pro S Plus trims. These push MSRP above $50,000, disqualifying the vehicle from the Oregon rebate. The loss of the $2,500 credit combined with $1,500 more in depreciation would reduce the win to roughly $5,400.
  • Income-qualified rebate. Oregon offers an enhanced $5,000 rebate for households at or below 400% of federal poverty level. This would widen David's advantage to $11,874. He does not qualify for this enhancement at his income level.
  • Federal EV credit reinstated. The prior $7,500 credit expired September 30, 2025 and is excluded. If reinstated, the ID.4 would win by roughly $16,874 — completely lopsided.

Run these numbers with your details

Different Portland neighborhood, different mileage, or considering higher ID.4 trims? The math shifts with those choices. Try the calculator with David's vehicles pre-loaded, then adjust for your situation.

Compare ID.4 vs. Tiguan in the calculator →