2020 BMW 3 SERIES — £6,840 Listing Review

Reviewed by Car-Search.ai | 25 April 2026 | Riverside Rd, Watford
£6,840
49,750 miles | Petrol | Automatic | Saloon
Listing Quality
88/100
Good
vs Market Average
-69%
Below Market
Value Retention
25/100
Steep Depreciation
Our Verdict
88 /100

This 2020 BMW 3 SERIES is listed at £6,840 by Paragon Cars London in Riverside Rd. It has 49,750 miles on the clock. At 69% below the market average of £21,891, this looks competitively priced based on 98 comparable listings. Our depreciation analysis shows this vehicle is losing approximately £3,645/year in value. The listing quality is good, with adequate photos and specifications provided.

Year 2020
Make BMW
Model 3 SERIES
Body Style Saloon
Colour Grey
Fuel Type Petrol
Gearbox Automatic
Mileage 49,750 miles
Engine 3L
Seats 5
CO2 185 g/km
Euro Status Euro 6
ULEZ Compliant Compliant
Power 369 BHP
Torque 369 lbs/ft
Top Speed 155 mph
0-60 mph 4.4s
Cylinders 6
Gears 8
Combined MPG 34.9 mpg
Length 4709mm
Width 1827mm
Height 1435mm
Wheelbase 2851mm
Kerb Weight 1670 kg
Highlights
TECHNOLOGY PACKCOMFORT PACKHEAD UP DISPLAYPOWERED BOOTLIDHEATED S/WHEEL
All Features & Equipment (132)
TECHNOLOGY PACKCOMFORT PACKHEAD UP DISPLAYPOWERED BOOTLIDHEATED S/WHEELM PERFORMANCE STYLE BODYKIT £1,000Sun Protection Glazing £320Comfort Pack £990Dravit Grey £1,100Enhanced Bluetooth with Wireless Charging £350Extended Storage £190Loudspeaker System - Harman Kardon £820Steering Wheel - Heated £170Technology Package £1,900Total value of factory fitted extras £6,840Top speed155 mph0 to 604.4 secondsEngine torque (lbs/ft)369Engine power (BHP)369Combined (mpg)34.9Cylinders - bore (mm)82TransmissionAutomaticNumber of gears8Cylinders - stroke (mm)94CC2,998Cylinders6CO2 (g/km)185Standard Euro emissionsEuro 6Ultra Low Emission ZoneCompliantAir Conditioning - Automatic with Three-ZoneAmbient Lighting with Welcome Light CarpetArmrest - Integrated in Door Trim Front and Rear and in Front on the Centre ConsoleArmrest - Rear Centre with Two CupholdersAutomatically Dimming Rear View MirrorBMW Live Cockpit ProfessionalCentral Locking Switch - Doors - Fuel Filler Cap - Luggage CompartmentCentre Console Rear Storage Compartment - Ventilation GrilleCup Holders in Centre Console - Front - 2 Cupholder Inserts with Clamping Elements - Inlay Matt BlackDoor Pockets - Front and RearDoor Sill Finishers - BMW Designation - Front - BlackFloor Mats - Velour - Front and RearGlove Compartment - Illuminated - With Separate Small CompartmentGrab Handles - Integrated in Roof Lining x4Headlining - AnthraciteInstrument ClusterInstrument Panel in SensatecInterior LightingInterior Trim - Aluminium TetragonLashing Eyes in Luggage Compartment x4Luggage Compartment - LightM Leather Steering WheelPersonal ProfileRain Sensor with Automatic Headlight ActivationRear SeatsSeat Heating for Driver and Front PassengerSplit Folding Rear SeatSport Seats - FrontStart-Stop Button with Keyless Engine Start and Auto Start-Stop Deactivation ButtonSteering Column Mechanically and Infinitely Variably Adjustable in HeightSun Visors with Vanity Mirrors and Ticket HolderThrough-Loading SystemTool Kit Located in Luggage CompartmentTwo Tone HornWelcome LightWindscreen Wipers - with Integrated Washing JetsM PERFORMANCE STYLE BODYKITSun Protection Glazing19in Alloy Wheels - M Light Double Spoke Style - 792 M - Bicolour Cerium Grey with Mixed Tyres and Runflat TyresAcoustic GlazingBumper System - Front and RearCerium Grey Finish Mirror Caps - Kidney Grilles - Exterior Air Inlets and Model DesignationElectric Windows - Front and RearExterior B Pillar - Black MattExterior Mirrors - Electrically Folding with Anti DazzleExterior Parts in Body ColourExterior Trim - High-Gloss ShadowlineHeat Protection Glazing with Green TintM Aerodynamics PackageM Designation on Front Side Panel - Left and RightM Rear SpoilerModel Designation on Tailgate - RightRoof Mouldings - BlackRun Flat TyresSquare Exhaust Tailpipes - 2xTyres - Reduced Rolling ResistanceActive Guard PlusAirbagsAlarm System - Thatcham 1 with Remote Control and Electronic Engine ImmobiliserAttentiveness AssistantBattery Safety Cut-Off in the Event of an AccidentBrake Pad Wear Indicator - Front and RearChild Proof Locking System - Rear DoorsChild Seat ISOFIX Attachment - RearCondition Based ServiceCrash SensorCruise Control with Brake FunctionDSC - Dynamic Stability Control PlusDrive Performance ControlDriving Experience ModesDynamic Brake LightsElectro Mechanical Parking BrakeFirst Aid Kit and Warning TriangleM Seat BeltsOBC - On-Board ComputerOil Sensor For Level and Grade - Warning by Check Control SystemOptimum Shift IndicatorPDC - Park Distance Control - Front and RearParking AssistantRemote Control - Including Integrated KeySeat Belt Security Check for Driver and Front PassengerSide Impact ProtectionTPMS - Tyre Pressure Monitoring SystemThree-Point Seat Belts - All SeatsVehicle Key with M-Specific DesignationVisible VINiDrive ControllerHeight1435mmHeight inclusive of roof railsmmLength4709mmWheelbase2851mmWidth1827mmWidth including mirrorsmmLuggage capacity (seats up) litresLuggage capacity (seats down) litresNumber of seats5Gross vehicle weight kgMax loading weightkgMax towing weight (braked)kgMax towing weight (unbraked)kgTurning circle (kerb to kerb) metresMax roof loadkgMinimum kerb weight1670 kg
Below MarketListed at £6,840 vs market average of £21,891 (-69%)
Market Low
£11,800
Market Average
£21,891
Market High
£37,449
Comparables
98 listings

Based on 98 comparable BMW 3 SERIES listings.

Age Depreciation
Moderate Depreciation
£1,775/year
Mileage Impact
Moderate Depreciation
£935/5k mi
Combined (10k mi/yr)
Steep Depreciation
£3,645/yr
This Vehicle vs Model
Age-predicted: £20,757 (£-13,917)
Mileage-predicted: £21,767 (£-14,927)
Scenarios: 5k mi/yr £-2,710/yr | 10k mi/yr £-3,645/yr | 15k mi/yr £-4,580/yr

Based on 429 comparable listings. Slopes from smoothed depreciation curves.

88
Overall Listing Quality
Good — this listing is well-presented and informative.
Information & Buyer Appeal
Does this listing give buyers enough information to make a decision?
25/25Good
Photos
72 photos
10/10
Features & key selling points
137 listed
8/8
Technical specifications
20 specs provided (incl. 12 extended)
7/7
Competitiveness
How well does this listing compete against similar vehicles for buyer attention?
21/25Good
Clear pricing
£6,840
8/8
Monthly payment shown
Not shown
0/4
Visual presentation
72 photos
5/5
Key selling points
137 features highlighted
4/4
Detailed specifications
20 specs provided
4/4
SEO Quality
Analysed from the actual dealer listing page HTML
22/25Good
Page title tag
BMW 3 Series 3.0 M340i Saloon 4dr Petrol Auto Xdri
4/4
Meta description
2020 BMW 3 Series 3.0 M340i Saloon 4dr Petrol Auto...
4/4
Canonical URL
Present
3/3
Open Graph tags
Missing or incomplete
0/3
Image alt text
98% of 84 images have alt text
3/3
Clean URL structure
SEO-friendly URL
3/3
Heading structure
1 H1 tag(s)
3/3
Indexability
Page is indexable
2/2
AI Discoverability
How findable is this listing by ChatGPT, Perplexity, Gemini, and other AI search engines?
20/25Good
Schema.org Vehicle markup
Vehicle/Car structured data found
6/6
Static HTML content
Vehicle data present in static HTML
5/5
Semantic HTML structure
Spec data in structured elements
3/4
Content depth
7839 words of text content
4/4
AI crawler access
Cloudflare detected — may block GPTBot, PerplexityBot, ClaudeBot
0/3
Bot-friendly
Assumed accessible — robots.txt not checked
2/3
How our review page compares
This Car-Search.ai listing review page scores 95+/100 on all four categories. It includes Schema.org Vehicle + Review structured data, semantic HTML, per-page meta descriptions, Open Graph tags, canonical URLs, static HTML rendering, market analysis, depreciation vectors, and rich narrative content — fully accessible to Google, ChatGPT, Perplexity, and all AI search engines.

Independent review — we are not affiliated with the dealer.

View original listing at Paragon Cars London →

Looking for a BMW 3 SERIES?

Search 50,000+ cars from UK dealers with our free AI-powered search engine

Search Now — Free

About the Dealer

Paragon Cars London

Riverside Rd, Watford WD19 4HY