Car comparison
A head-to-head comparison with real data from the Portuguese market: average price by registration year, fuel cost, depreciation and available supply.
Firefly
€23,999
Average price
Registered in 2026
1 listing for sale
Smart
€11,340
Average price
Registered 2016–2023
125 listings for sale
PartnerCar history: recorded mileage, accidents and damage, when available. 20% off with the code ENCONTRACARROS. Our link applies the discount for you.
A summary of the head-to-head with the latest market data.
Cheaper to buy
Average price of recent listings
More choice on the market
Listings available now, in the chosen years
With the average advertised consumption and current average prices in Portugal, for 15,000 km a year.
€9.44per 100 km
No consumption data for the Firefly Firefly, so it cannot be compared.
Estimates based on the average consumption in each model's listings and the latest national average fuel prices (DGEG data, the Portuguese energy authority). For electric cars we use a reference household tariff of €0.22/kWh. See the current fuel prices.
Average listing price of each model, month by month, over the last year.
Every market indicator for both models, side by side.
| Indicator | Firefly FireflyRegistered in 2026 | Smart ForfourRegistered 2016–2023 |
|---|---|---|
| Average price (recent listings) | €23,999 | €11,340 |
| Available listings | 1 | 125 |
| Sold listings | 87 | 776 |
| Sample analysed | 88 | 901 |
| Time to sell | No data | 1 to 2 months |
| Estimated annual depreciation | No data | No data |
| Overall market share | 0.01% | 0.14% |
| Average power | 143 hp | 81 hp |
| Most common fuel | Electric | Petrol |
| Average advertised consumption | No data | 4.8 L/100 km |
| Segment | No data | City car |
Where the listings for each model were over the last 12 months.
| District | Firefly Firefly | Smart Forfour |
|---|---|---|
| Porto | 23 | 291 |
| Lisbon | 3 | 293 |
| Setúbal | 1 | 71 |
| Braga | 2 | 53 |
| Aveiro | 1 | 42 |
| Faro | 0 | 35 |
| Madeira | 0 | 17 |
| Viseu | 0 | 16 |
| Leiria | 2 | 13 |
| Santarém | 0 | 15 |
| Azores | 0 | 9 |
| Coimbra | 1 | 8 |
Tap a number to see those listings. We show the 12 districts with the most supply.
The most common questions about the Firefly Firefly vs the Smart Forfour, answered with market data.
On average, the Smart Forfour is cheaper: it costs about €11,340 (registered between 2016 and 2023), while the Firefly Firefly costs €23,999 on average (registered in 2026). The difference is around €12,658, based on used car listings published on the main Portuguese platforms over the last 12 months.
A used Firefly Firefly costs €23,999 on average in Portugal, based on listings registered in 2026. The price varies with the registration year, the mileage and the version. Right now we find 1 listing for this model in Portugal.
A used Smart Forfour costs €11,340 on average in Portugal, based on listings registered between 2016 and 2023. The price varies with the registration year, the mileage and the version. Right now we find 125 listings for this model in Portugal.
Right now we find 1 Firefly Firefly listings and 125 Smart Forfour listings on the main used car platforms in Portugal. These figures are updated daily.
On average, Firefly Firefly cars listed in Portugal have 143 hp and Smart Forfour cars 81 hp, so the Firefly Firefly is, on average, the more powerful. Power varies a lot with the engine and the version.
€1,150
2004 · 174,623 km · Petrol · 109 hp
€2,250
2001 · 178,144 km · Diesel · 41 hp
€9,750
2019 · 110,000 km · Petrol · 71 hp
€12,800
2021 · 44,379 km · Electric · 82 hp
€10,500
2016 · 80,000 km · Petrol · 90 hp
€9,490
2016 · 91,527 km · Petrol · 71 hp
€10,790
2018 · 60,415 km · Electric · 82 hp
€12,400
2019 · 109,116 km · Petrol · 71 hp
€11,499
2018 · 100,776 km · Petrol · 90 hp
€13,300
2019 · 65,000 km · Petrol · 71 hp
€10,790
2018 · 60,415 km · Electric · 82 hp
€12,400
2019 · 109,116 km · Petrol · 71 hp
These models head to head with their direct rivals.
Each of these models head to head with every rival on the Portuguese market.
Want to compare other models? Use the car comparison tool or see the comparisons for every model.
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