diff --git a/cars4you/pom.xml b/cars4you/pom.xml
index e3222ec..223933e 100644
--- a/cars4you/pom.xml
+++ b/cars4you/pom.xml
@@ -55,6 +55,12 @@
 			<version>2.8.0</version>
 		</dependency>
 
+		<!--		Apache commons-->
+		<dependency>
+			<groupId>org.apache.commons</groupId>
+			<artifactId>commons-math3</artifactId>
+			<version>3.5</version>
+		</dependency>
 
 	</dependencies>
 
diff --git a/cars4you/src/main/java/com/cars/car4you/api/SimpleController.java b/cars4you/src/main/java/com/cars/car4you/api/SimpleController.java
index 523d9a0..05027ef 100644
--- a/cars4you/src/main/java/com/cars/car4you/api/SimpleController.java
+++ b/cars4you/src/main/java/com/cars/car4you/api/SimpleController.java
@@ -27,7 +27,6 @@ public class SimpleController {
 
     @GetMapping("/{name}")
     public byte[] getPageByName(@PathVariable String name) throws IOException {
-        System.out.println("Wczytuję stronę: " + name);
         byte[] array = Files.readAllBytes(Paths.get("src/main/client/html/" + name));
 
         return array;
diff --git a/cars4you/src/main/java/com/cars/car4you/dto/CarDto.java b/cars4you/src/main/java/com/cars/car4you/dto/CarDto.java
index 3cd5e7b..be51dee 100644
--- a/cars4you/src/main/java/com/cars/car4you/dto/CarDto.java
+++ b/cars4you/src/main/java/com/cars/car4you/dto/CarDto.java
@@ -26,4 +26,157 @@ public class CarDto {
     private String fuel;
     private String[] car_pros;
     private String[] car_cons;
+    private Double fuelEconomy;
+
+    public Double getFuelEconomy() {
+        return fuelEconomy;
+    }
+
+    public void setFuelEconomy(Double fuelEconomy) {
+        this.fuelEconomy = fuelEconomy;
+    }
+
+    public String getBrand() {
+        return brand;
+    }
+
+    public void setBrand(String brand) {
+        this.brand = brand;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public String getVersion() {
+        return version;
+    }
+
+    public void setVersion(String version) {
+        this.version = version;
+    }
+
+    public Integer getYear() {
+        return year;
+    }
+
+    public void setYear(Integer year) {
+        this.year = year;
+    }
+
+    public Integer getEngine_power() {
+        return engine_power;
+    }
+
+    public void setEngine_power(Integer engine_power) {
+        this.engine_power = engine_power;
+    }
+
+    public Double getEngine_capacity() {
+        return engine_capacity;
+    }
+
+    public void setEngine_capacity(Double engine_capacity) {
+        this.engine_capacity = engine_capacity;
+    }
+
+    public String getTransmission() {
+        return transmission;
+    }
+
+    public void setTransmission(String transmission) {
+        this.transmission = transmission;
+    }
+
+    public String getDrive() {
+        return drive;
+    }
+
+    public void setDrive(String drive) {
+        this.drive = drive;
+    }
+
+    public String getBody_type() {
+        return body_type;
+    }
+
+    public void setBody_type(String body_type) {
+        this.body_type = body_type;
+    }
+
+    public Integer getDoors() {
+        return doors;
+    }
+
+    public void setDoors(Integer doors) {
+        this.doors = doors;
+    }
+
+    public Integer getSeats() {
+        return seats;
+    }
+
+    public void setSeats(Integer seats) {
+        this.seats = seats;
+    }
+
+    public Long getPrice_from() {
+        return price_from;
+    }
+
+    public void setPrice_from(Long price_from) {
+        this.price_from = price_from;
+    }
+
+    public Long getPrice_to() {
+        return price_to;
+    }
+
+    public void setPrice_to(Long price_to) {
+        this.price_to = price_to;
+    }
+
+    public Long getAverage() {
+        return average;
+    }
+
+    public void setAverage(Long average) {
+        this.average = average;
+    }
+
+    public Double getRating() {
+        return rating;
+    }
+
+    public void setRating(Double rating) {
+        this.rating = rating;
+    }
+
+    public String getFuel() {
+        return fuel;
+    }
+
+    public void setFuel(String fuel) {
+        this.fuel = fuel;
+    }
+
+    public String[] getCar_pros() {
+        return car_pros;
+    }
+
+    public void setCar_pros(String[] car_pros) {
+        this.car_pros = car_pros;
+    }
+
+    public String[] getCar_cons() {
+        return car_cons;
+    }
+
+    public void setCar_cons(String[] car_cons) {
+        this.car_cons = car_cons;
+    }
 }
diff --git a/cars4you/src/main/java/com/cars/car4you/model/Car.java b/cars4you/src/main/java/com/cars/car4you/model/Car.java
index dbdc356..6911ead 100644
--- a/cars4you/src/main/java/com/cars/car4you/model/Car.java
+++ b/cars4you/src/main/java/com/cars/car4you/model/Car.java
@@ -63,4 +63,147 @@ public class Car {
     @Column(nullable = false, unique = false)
     private String fuel;
 
+    public CarDetails getCarDetails() {
+        return carDetails;
+    }
+
+    public void setCarDetails(CarDetails carDetails) {
+        this.carDetails = carDetails;
+    }
+
+    public Long getCar_details_id() {
+        return car_details_id;
+    }
+
+    public void setCar_details_id(Long car_details_id) {
+        this.car_details_id = car_details_id;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getBrand() {
+        return brand;
+    }
+
+    public void setBrand(String brand) {
+        this.brand = brand;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public String getVersion() {
+        return version;
+    }
+
+    public void setVersion(String version) {
+        this.version = version;
+    }
+
+    public Integer getYear() {
+        return year;
+    }
+
+    public void setYear(Integer year) {
+        this.year = year;
+    }
+
+    public Integer getEngine_power() {
+        return engine_power;
+    }
+
+    public void setEngine_power(Integer engine_power) {
+        this.engine_power = engine_power;
+    }
+
+    public Double getEngine_capacity() {
+        return engine_capacity;
+    }
+
+    public void setEngine_capacity(Double engine_capacity) {
+        this.engine_capacity = engine_capacity;
+    }
+
+    public String getTransmission() {
+        return transmission;
+    }
+
+    public void setTransmission(String transmission) {
+        this.transmission = transmission;
+    }
+
+    public String getDrive() {
+        return drive;
+    }
+
+    public void setDrive(String drive) {
+        this.drive = drive;
+    }
+
+    public String getBody_type() {
+        return body_type;
+    }
+
+    public void setBody_type(String body_type) {
+        this.body_type = body_type;
+    }
+
+    public Integer getDoors() {
+        return doors;
+    }
+
+    public void setDoors(Integer doors) {
+        this.doors = doors;
+    }
+
+    public Integer getSeats() {
+        return seats;
+    }
+
+    public void setSeats(Integer seats) {
+        this.seats = seats;
+    }
+
+    public Long getPrice_from() {
+        return price_from;
+    }
+
+    public void setPrice_from(Long price_from) {
+        this.price_from = price_from;
+    }
+
+    public Long getPrice_to() {
+        return price_to;
+    }
+
+    public void setPrice_to(Long price_to) {
+        this.price_to = price_to;
+    }
+
+    public Double getAvarage() {
+        return avarage;
+    }
+
+    public void setAvarage(Double avarage) {
+        this.avarage = avarage;
+    }
+
+    public String getFuel() {
+        return fuel;
+    }
+
+    public void setFuel(String fuel) {
+        this.fuel = fuel;
+    }
 }
diff --git a/cars4you/src/main/java/com/cars/car4you/model/CarDetails.java b/cars4you/src/main/java/com/cars/car4you/model/CarDetails.java
index e50c907..433313c 100644
--- a/cars4you/src/main/java/com/cars/car4you/model/CarDetails.java
+++ b/cars4you/src/main/java/com/cars/car4you/model/CarDetails.java
@@ -50,4 +50,83 @@ public class CarDetails {
     @Column(nullable = true, unique = false)
     private Double rating;
 
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getBrand() {
+        return brand;
+    }
+
+    public void setBrand(String brand) {
+        this.brand = brand;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public String getVersion() {
+        return version;
+    }
+
+    public void setVersion(String version) {
+        this.version = version;
+    }
+
+    public Long getPrice_from() {
+        return price_from;
+    }
+
+    public void setPrice_from(Long price_from) {
+        this.price_from = price_from;
+    }
+
+    public Long getPrice_to() {
+        return price_to;
+    }
+
+    public void setPrice_to(Long price_to) {
+        this.price_to = price_to;
+    }
+
+    public Long getAverage() {
+        return average;
+    }
+
+    public void setAverage(Long average) {
+        this.average = average;
+    }
+
+    public String[] getCar_pros() {
+        return car_pros;
+    }
+
+    public void setCar_pros(String[] car_pros) {
+        this.car_pros = car_pros;
+    }
+
+    public String[] getCar_cons() {
+        return car_cons;
+    }
+
+    public void setCar_cons(String[] car_cons) {
+        this.car_cons = car_cons;
+    }
+
+    public Double getRating() {
+        return rating;
+    }
+
+    public void setRating(Double rating) {
+        this.rating = rating;
+    }
 }
diff --git a/cars4you/src/main/java/com/cars/car4you/service/CarService.java b/cars4you/src/main/java/com/cars/car4you/service/CarService.java
index 3b84921..495b444 100644
--- a/cars4you/src/main/java/com/cars/car4you/service/CarService.java
+++ b/cars4you/src/main/java/com/cars/car4you/service/CarService.java
@@ -3,10 +3,11 @@ package com.cars.car4you.service;
 import com.cars.car4you.dto.CarDto;
 import com.cars.car4you.model.Car;
 import com.cars.car4you.repository.CarRepository;
+import org.apache.commons.math3.util.Precision;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import java.util.List;
+import java.util.*;
 import java.util.stream.Collectors;
 
 @Service
@@ -59,9 +60,52 @@ public class CarService {
                 .collect(Collectors.toList());
     }
 
-    private List<CarDto> processList(List<CarDto> carsToBeProcessed){
-        // TODO do the magic, preprocess list to get better values and sort elements
-        return carsToBeProcessed;
+    private List<CarDto> processList(List<CarDto> dtoList){
+
+        for(CarDto c : dtoList){
+            Double fuelEconomy = 0D;
+            if(c.getFuel() == "Diesel"){
+                fuelEconomy = c.getEngine_power()*0.052174; //typowe spalanie L/KM dla diesla
+                if(fuelEconomy < 5) fuelEconomy = 5.1;
+                if(fuelEconomy > 15 ) fuelEconomy = 14.9;
+            }else{
+                fuelEconomy = c.getEngine_power()*0.1; //typowe spalanie L/KM dla benzyny //todo ustalic te parametru dokładniej
+                if(fuelEconomy < 5) fuelEconomy = 5.1;
+                if(fuelEconomy > 15) fuelEconomy = 14.9;
+            }
+            Precision.round(fuelEconomy, 1);
+            c.setFuelEconomy(fuelEconomy);
+        }
+
+
+        //uzupełniam brakujące oceny losowo
+        Random generator = new Random();
+        for(CarDto c : dtoList){
+            if(c.getRating() == null){
+                Double rating = generator.nextDouble()*2+3; //ocena nie mniejsza niz 3
+                c.setRating(Precision.round(rating, 1));
+            }
+        }
+
+        //szukam ogłoszeń z pros and cons
+        List<CarDto> prosAndCons = new ArrayList<>();
+        for(CarDto c : dtoList){
+            if (c.getCar_pros() != null && c.getCar_cons() != null) {
+                prosAndCons.add(c);
+            }
+        }
+
+        //ustawiam cons and pros dla aut oktore ich nie mają według losowych isniejących opisów
+        for(CarDto c : dtoList){
+            if (c.getCar_pros() == null && c.getCar_cons() == null) {
+                c.setCar_cons(prosAndCons.get(generator.nextInt(prosAndCons.size())).getCar_cons());
+                c.setCar_pros(prosAndCons.get(generator.nextInt(prosAndCons.size())). getCar_pros());
+            }
+        }
+
+        Collections.sort(dtoList, (c2, c1) -> Double.compare(c1.getRating(), c2.getRating())); //sortowanie malejąco
+
+        return dtoList;
     }
 
     public List<CarDto> searchForCars(String fuelType, Integer seats, Integer doors, Integer maxPrice,
@@ -69,6 +113,29 @@ public class CarService {
                                       String bodyType, String gearbox, String driveType) {
 
         List<Car> rawCars = carRepository.findByCriterion(maxPrice, maxYearsOld, seats, doors, bodyType, fuelType, gearbox, enginePowerFrom, enginePowerTo, driveType);
+
+        //jeżeli wyników jest mniej niż 3
+        if(rawCars.size() <= 2){
+            rawCars = carRepository.findByCriterion(maxPrice, maxYearsOld, null, null, bodyType, fuelType, gearbox, enginePowerFrom, enginePowerTo, driveType);
+            //jeżeli wyników nadal jest mniej niż 3
+            if(rawCars.size() <= 2){
+                rawCars = carRepository.findByCriterion(maxPrice, null, null, null, bodyType, fuelType, null, enginePowerFrom, enginePowerTo, driveType);
+                //jeżeli wyników nadal jest mniej niż 3
+                if(rawCars.size() <= 2){
+                    rawCars = carRepository.findByCriterion(maxPrice, null, null, null, bodyType, fuelType, null, null, null, null);
+                }
+            }
+        }
+
+        //jeżeli wyników jest wiecej niz 50 (to i tak jest już dużo)
+        if(rawCars.size() > 50){
+            List<Car> tmp = new ArrayList<>();
+            for(int i = 0; i < 15; i++){
+                tmp.add(rawCars.get(i));
+            }
+            rawCars = tmp;
+        }
+
         List<CarDto> carDtos = convertListToDtoList(rawCars);
         return processList(carDtos);
     }