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Designing a second-hand vehicle marketplace app for one of Turkey's largest technology companies

Designing a second-hand vehicle marketplace app for one of Turkey's largest technology companies

Project Name

Sensat Mobile App

Year

2023

Industry

Automotive

Role

Product Designer

Project Overview

Sensat is a second-hand vehicle buying, selling, and rental platform developed by Doğuş Teknoloji one of Turkey's largest technology conglomerates. The mobile application serves both individual and corporate users, enabling them to list vehicles, browse listings, compare options, complete rental transactions, and manage the full purchasing process including ekspertiz (vehicle inspection) reports and insurance.

THE PROBLEM

Second-hand vehicle transactions in Turkey involve significant trust barriers. Buyers worry about hidden damage, inflated prices, and unreliable sellers. Sellers need a platform that makes listing straightforward and reaches serious buyers. Corporate users require a more structured, verifiable process than informal platforms provide.


The design challenge was building a mobile experience that handled the full transaction lifecycle discovery, comparison, listing creation, rental, and purchase while making each step feel transparent, trustworthy, and efficient for both individual and corporate users.

USERS

Individual buyers

Searching for their next vehicle. They compare multiple listings, care about price history, vehicle condition, and inspection reports. Trust signals are critical before they take any action.

Individual sellers

Individual sellers

Listing their own vehicle. They need a guided, low-friction listing creation flow that helps them present their vehicle accurately without requiring expertise.

Corporate users

Fleet managers and dealerships operating at higher volume. They need structured workflows, reliable data, and professional-grade listing management.

Key Insights

Trust is earned through transparency, not assurance

Trust is earned through transparency, not assurance

Users don't trust claims — they trust data. The vehicle detail page needed to surface objective information: ekspertiz report results, damage records, vehicle status, and verified specifications rather than relying on seller descriptions alone.

Listing creation must guide, not interrogate

Listing creation must guide, not interrogate

Creating a vehicle listing involves capturing a significant amount of structured data — vehicle type, condition, pricing, communication preferences, photos. A form-dump approach creates abandonment. A step-by-step flow with clear progress indication keeps sellers moving forward without feeling overwhelmed.

Filtering is the primary navigation tool

Filtering is the primary navigation tool

In a large vehicle inventory, search alone is insufficient. Users navigate primarily through filtering by price range, vehicle type, year, mileage, location, and features. The filtering system needed to be comprehensive without becoming a barrier to starting a search.

Listing Creation

The listing creation flow is structured as a multi-step wizard with a persistent progress bar at the top, allowing sellers to see exactly where they are in the process at all times. Each step addresses a discrete content domain vehicle selection, pricing information, vehicle status and condition, part information, ekspertiz documentation, insurance options, communication preferences, and deposit configuration.

The pricing step surfaces a suggested price range based on vehicle data, giving sellers an objective reference point rather than leaving them to guess. Vehicle status options use a clear visual selection format radio selections with descriptive labels — rather than dropdowns, reducing ambiguity about what each option means. The communication preferences step gives sellers explicit control over how buyers can contact them, which was identified as a key trust and privacy consideration for the seller audience.

Listing Creation

The listing creation flow is structured as a multi-step wizard with a persistent progress bar at the top, allowing sellers to see exactly where they are in the process at all times. Each step addresses a discrete content domain vehicle selection, pricing information, vehicle status and condition, part information, ekspertiz documentation, insurance options, communication preferences, and deposit configuration.

The pricing step surfaces a suggested price range based on vehicle data, giving sellers an objective reference point rather than leaving them to guess. Vehicle status options use a clear visual selection format radio selections with descriptive labels — rather than dropdowns, reducing ambiguity about what each option means. The communication preferences step gives sellers explicit control over how buyers can contact them, which was identified as a key trust and privacy consideration for the seller audience.

Listing Creation

The listing creation flow is structured as a multi-step wizard with a persistent progress bar at the top, allowing sellers to see exactly where they are in the process at all times. Each step addresses a discrete content domain vehicle selection, pricing information, vehicle status and condition, part information, ekspertiz documentation, insurance options, communication preferences, and deposit configuration.

The pricing step surfaces a suggested price range based on vehicle data, giving sellers an objective reference point rather than leaving them to guess. Vehicle status options use a clear visual selection format radio selections with descriptive labels — rather than dropdowns, reducing ambiguity about what each option means. The communication preferences step gives sellers explicit control over how buyers can contact them, which was identified as a key trust and privacy consideration for the seller audience.

Vehicle Detail

The vehicle detail page is structured around progressive trust-building. The listing leads with high-quality vehicle imagery, followed by key specifications, price, and seller information. The ekspertiz (vehicle inspection) report section surfaces the inspection result visually — with a vehicle diagram highlighting any reported damage — before surfacing detailed part-by-part condition data. This approach lets buyers form a quick visual impression before committing to reading detailed report content.

Rental details, credit options, and other seller listings are presented in clearly separated sections below the primary information, accessible without cluttering the primary decision surface.

Vehicle Detail

The vehicle detail page is structured around progressive trust-building. The listing leads with high-quality vehicle imagery, followed by key specifications, price, and seller information. The ekspertiz (vehicle inspection) report section surfaces the inspection result visually — with a vehicle diagram highlighting any reported damage — before surfacing detailed part-by-part condition data. This approach lets buyers form a quick visual impression before committing to reading detailed report content.

Rental details, credit options, and other seller listings are presented in clearly separated sections below the primary information, accessible without cluttering the primary decision surface.

Vehicle Detail

The vehicle detail page is structured around progressive trust-building. The listing leads with high-quality vehicle imagery, followed by key specifications, price, and seller information. The ekspertiz (vehicle inspection) report section surfaces the inspection result visually — with a vehicle diagram highlighting any reported damage — before surfacing detailed part-by-part condition data. This approach lets buyers form a quick visual impression before committing to reading detailed report content.

Rental details, credit options, and other seller listings are presented in clearly separated sections below the primary information, accessible without cluttering the primary decision surface.

Detailed Search, Filtering & Listing

The discovery flow starts with vehicle categories Otomobil, SUV, Hafif Ticari, Motosiklet, Deniz Araçları each with a listing count, letting users gauge inventory before narrowing. This category-first entry replaces a generic search bar, matching how users mentally segment vehicle types.

The filter panel groups parameters into clear sections brand, model year, equipment, mileage, price, location, fuel, transmission with a Satılık / Kiralık tab separating the two as distinct intents. Selected brands appear as removable chips at the top, summarizing active filters without scrolling.

The listing screen presents results with total count, sort, and view toggle in the header. Each card surfaces price, model, key specs, and contextual badges directly so users can scan and shortlist without opening individual listings.

Detailed Search, Filtering & Listing

The discovery flow starts with vehicle categories Otomobil, SUV, Hafif Ticari, Motosiklet, Deniz Araçları each with a listing count, letting users gauge inventory before narrowing. This category-first entry replaces a generic search bar, matching how users mentally segment vehicle types.

The filter panel groups parameters into clear sections brand, model year, equipment, mileage, price, location, fuel, transmission with a Satılık / Kiralık tab separating the two as distinct intents. Selected brands appear as removable chips at the top, summarizing active filters without scrolling.

The listing screen presents results with total count, sort, and view toggle in the header. Each card surfaces price, model, key specs, and contextual badges directly so users can scan and shortlist without opening individual listings.

Detailed Search, Filtering & Listing

The discovery flow starts with vehicle categories Otomobil, SUV, Hafif Ticari, Motosiklet, Deniz Araçları each with a listing count, letting users gauge inventory before narrowing. This category-first entry replaces a generic search bar, matching how users mentally segment vehicle types.

The filter panel groups parameters into clear sections brand, model year, equipment, mileage, price, location, fuel, transmission with a Satılık / Kiralık tab separating the two as distinct intents. Selected brands appear as removable chips at the top, summarizing active filters without scrolling.

The listing screen presents results with total count, sort, and view toggle in the header. Each card surfaces price, model, key specs, and contextual badges directly so users can scan and shortlist without opening individual listings.