Smart Forfour Buying Guide

A used petrol Smart Forfour from the later rear-engined generation should be assessed as a compact four-seat city car, with motorway comfort and luggage space tested against your needs. Confirm the offered Smart Forfour matches its paperwork, then book an inspection that covers its construction and fitted equipment.

I used What Car? used Smart Forfour review when preparing this November 7, 2026 guide. Those sources describe the model, its known weak spots and its engineering, not the history of any single car for sale. So, the checks below turn that background into questions for a seller and a workshop; they do not assign a failure rate or current market value.

Identify which Forfour is being sold

A used petrol Smart Forfour from the later rear-engined generation should be assessed as a compact four-seat city car, with motorway comfort and luggage space tested against your needs. Autocar reviews the 2015-2019 petrol model. Earlier Forfours and electric versions need different buying checks, so establish the exact powertrain before arranging the viewing. An electric car needs battery and charging evidence that a petrol checklist cannot provide. Use the registration, VIN and manufacturer build details to settle an ambiguous listing.

Use the four seats before deciding it is practical

The Forfour needs to carry your actual passengers comfortably to justify choosing it over a two-seat city car. Sit in the rear behind your own driving position and check access with the front seat set normally. Test a child seat if relevant and check the belt buckles are accessible. Load the boot with your usual bags without folding seats you need for people. Check the parcel cover, seat-folding mechanisms and interior handles. A clever compact layout still involves compromises, and a viewing is the cheapest time to discover which ones matter.

Test petrol gearbox behaviour in a realistic queue

Low-speed driving should feel predictable in the specific gearbox version you are buying. Ask the seller to identify it, then include parking, reversing and stop-start traffic during an insured test. Check response when pulling away and note any warning or unusual hesitation rather than guessing that it is normal for a small car. Have a Smart-familiar workshop distinguish expected characteristics from wear or a fault. Request itemised service invoices and check that the schedule corresponds to this car instead of borrowing requirements from another Forfour generation.

Inspect rear access and city-contact damage

The rear-engined layout puts some inspection work in unfamiliar places for someone used to a front-engined hatchback. Ask the seller to show the handbook procedure for accessing service areas and keep hands clear of hot components. Have a workshop look for fluid leaks and poor repairs around the rear structure. Examine wheels, tyres, door edges and low bodywork for parking contact. Operate the climate system and all windows while parked, then listen for trim rattles on the drive. Small external dimensions do not make hidden accident damage harmless.

Put the VIN and title file beside the inspection

The physical chassis identifier must agree with the sale documents before a report is ordered. Use our VIN identity checks to organise that comparison and our imported-car report guide to understand why foreign history may be thin. Ask for the title, registration and service invoices, plus import papers if the car came from another country. NMVTIS offers a U.S. title-history route with defined coverage; it does not confirm mechanical condition or replace dealer service records. A fake PDF can disguise an ownership gap, so verify evidence through the issuing source rather than accepting a seller screenshot.

Agree the specialist work before leaving a deposit

Tell the shop which version and components it will see, then agree lift access, a controlled road test and a written description of limitations. Our pre-purchase inspection checklist helps frame the appointment, while NYC used-car guidance recommends an independent mechanic. Ask the specialist to separate immediate safety work from cosmetic preferences and optional upgrades. Look, a repair estimate is useful only if a supplier will actually provide the required part. Have the shop obtain a response for any known missing item.

Keep the offer conditional on the findings you care about. Put any seller repair promise in the purchase agreement. If the workshop cannot establish structural condition or a route to a needed safety part, defer the deal rather than inventing a discount. The final decision should reflect the documented car and your intended use, not a figure copied from a launch story.

We are a licensed CARFAX and AutoCheck reseller, not affiliated with CARFAX, AutoCheck or Experian. Wholesale reports cost a few dollars; confirm current coverage and the total at checkout. A quiet report can miss unreported repairs. Keep the independent inspection even if the seller sends an impressive PDF.

Sources

• What Car? used Smart Forfour review
• U.S. DOJ NMVTIS
• NYC used-car buying guidance