TELEMETRY AUDIT POST-WARRANTY BENCHMARK VIN PREFIX: LGXC7A4C MILESTONE: 90,000 KM

2021 BYD HAN EV · 90,000 KM SURVIVAL REPORT

Empirical electric executive sedan mechanical, thermal, and BMS lifecycle evaluation. Detailed analysis on FinDreams Blade Battery (LFP) capacity retention, Silicon Carbide (SiC) MOSFET inverter durability, and secondary-market replacement logistics. All figures reflect illustrative UI modeling derived from simulated multi-market fleet records. Verify official source for localized campaigns.

Cohort Variant Selector

SAMPLE ARCHIVE POOL n = 1,680

Vehicle Architecture e-Platform 2.0 (Prismatic Cell-to-Pack)

Chemistry Specification Lithium Iron Phosphate (LFP Blade)

Mean In-Service Date OCTOBER 2021

Data Reliability Index 96.8% HIGH CONFIDENCE

warning DATA PROVENANCE NOTICE

Illustrative UI data pool. Real-world degradation varies by ambient thermal cycles, charging rate ratios, and fast-charge pre-conditioning habits.

Five-Factor Actuarial Scorecard & Uncertainty Envelope

CONFIDENCE INTERVAL: 95% [35 – 43] • Illustrative UI Data

Actuarial Risk GRADE A-

39 / 100

Optimal Threshold < 45 LOW RISK

Annual Burden -46% SEGMENT

€680 / yr

Exec EV Mean €1,250 / yr

Zero fluid/timing mechanicals

Parts Liquidity GLOBAL LAG

52 / 100

CN Domestic 95/100 (48hr)

38-day maritime transit ex-EU

250k km Survival TOP DECILE

86% ODDS

Chemistry Blade LFP

No dendrite-short thermal runaway

DIY Feasibility PROPRIETARY

32 / 100

Scan Protocol V2.4 Cloud Tool

Requires encrypted gateway token

Actuarial Risk Variance Envelope • Normal Density Distribution (95% CI) μ = 39.0 · σ = 2.1

model_training Actuarial Evaluation Notes

The 2021 BYD Han EV demonstrates atypical powertrain stability due to complete mechanical simplification. With an actuator-free direct reducer single-speed drive unit, risk concentrates primarily into peripheral auxiliary electronics and cabin actuators rather than traction components.

Confidence: p < 0.01 Source: Multi-Fleet Sensor Ingestion

Blade Battery Degradation & Fast-Charging Thermal Envelope

CHEMISTRY: LiFePO4 • PACK: 76.9 kWh CTP

Empirical Degradation Horizons (at 90,000 km) N=1,680 SOH READINGS

SCENARIO A · BEST-CASE (Controlled 11 kW AC Focus)

Predominantly home level-2 AC charging (90%), temperature regulated 15°C–24°C.

94.1% SOH RETENTION

SCENARIO B · OBSERVED FLEET MEAN (Mixed Real-World Duty)

60% AC / 40% DC High-Speed charging, varied ambient weather operation.

91.9% SOH RETENTION

SCENARIO C · SEVERE DUTY (Continuous High-Power DC in Hot Ambient)

>75% 120 kW rapid DC charging cycles, high-temperature Middle East / SE Asia fleets.

88.4% SOH RETENTION

shield Blade Cell Prismatic Matrix exhibits exceptional structural rigidity against pouch swelling. Illustrative UI data

120 kW DC Fast-Charge Taper Curve 30% to 80% in 28 min

Conservative thermal management preserves cell pack balance: sharp ramp-down initiated strictly at 75% State of Charge (SoC) to limit internal resistive heat.

memory

Silicon Carbide (SiC) Inverter 99.1% MTBF

High-frequency switching reduces thermal losses by 30% over standard IGBT setups. Zero field dielectric breakdown in sample pool.

Illustrative telemetry model • Verified benchmark

Predictive Failure Horizon (90,000 – 120,000 km)

4 IDENTIFIED ACTUARIAL VECTORS • Illustrative UI Data

VECTOR 01 MODERATE

DiLink Rotating Pivot Motor Gear Strip

Plastic worm gear within the 15.6-inch motorized central infotainment hinge experiences fatigue-induced tooth shear after 4,000+ rotation cycles.

Expected Onset 96,000 km

Remediation Cost €240 – €380

Countermeasure Brass gear aftermarket kit

VECTOR 02 HIGH URGENCY

Brembo 4-Piston Caliper Slide Pin Rust

Due to aggressive regenerative braking recapture, mechanical friction brakes are under-exercised, causing road salt moisture binding on aluminum slider pins.

Expected Onset 102,000 km

Remediation Cost €310 – €490

Countermeasure Bi-annual slide pin relubrication

VECTOR 03 MODERATE

12V LFP Auxiliary Battery Sensor Drift

The low-voltage 12V LiFePO4 battery monitoring sensor exhibits voltage calculation offset, leading to false auxiliary system discharge codes.

Expected Onset 108,000 km

Remediation Cost €160 – €260

Countermeasure Sensor calibration firmware reflash

VECTOR 04 MODERATE

Multi-Link Rear Bushing Fluid Weeping

Hydraulic damping fluid seeps past vulcanized rubber seals on lower rear control arms due to 2,020 kg curb weight dynamics on uneven surfaces.

Expected Onset 114,000 km

Remediation Cost €420 – €680

Countermeasure Solid polyurethane bushing swap

Subsystem Failure Matrix & Supply-Chain Friction

DATA POOL N=1,680 • Illustrative UI Data

Subsystem / Component	Incident Rate	Observed Mean	OEM Authorized	Indie Specialist	Labor Units	Vector Urgency
High-Voltage PTC Cabin Heater Core Internal ceramic resistor fracture during sub-zero thermal cycling	4.2%	88,200 km	€1,150	€620	3.4 hrs	MONITORED
Front Drive Unit Half-Shaft CV Joint Boot High instantaneous torque creates rubber accordion fatigue tear	6.8%	74,000 km	€410	€190	1.8 hrs	MODERATE
Blade Battery Liquid Cooling Manifold Coupler Quick-connect nylon lock brittle fracture under thermal expansion	1.1%	112,000 km	€780	€380	4.2 hrs	CRITICAL
Electric Power Steering (EPS) Rack Torque Sensor Contact resistance variance causing mild centering steering notchiness	3.7%	91,500 km	€1,420	€710	3.0 hrs	MODERATE

Showing 4 primary recorded failure profiles • Costs normalized to European secondary market Verify official source • Illustrative UI data

GLOBAL LOGISTICS DISCLOSURE

Regional Supply Bottleneck

While mechanical wear components (brake pads, drop links, filters) share standard dimensions, electronic modules and body panels outside Greater China suffer maritime transit delays.

Domestic China Hub Dispatch (Shenzhen / Changsha) 48 Hours • Fully Stocked

Export Overseas Market Wait Time (Europe / GCC / LatAm) 38 Days Avg Maritime Lead

Recommendation: Pre-order inverter relays and exterior sensors via specialized parallel importers.

Used-Buyer 5-Point Physical Inspection Protocol

FIELD VERIFICATION CHECKLIST

01

Blade Enclosure Strike Check

Inspect structural aluminum bottom plate for scrape gouges or indentation over 3mm deep, particularly around battery pack cooling channels.

Pass: Zero indentation

02

HV Busbar Moisture Check

Verify orange high-voltage service disconnect cover and motor wiring gaskets for silicone drying, ingress white powdery residue, or oxidation.

Pass: Dry elastic seal

03

Regen to Friction Hand-Off

During light deceleration from 50 to 10 km/h, check for pedal judder or sudden step changes as the Bosch IPB transitions from motor to caliper clamp.

Pass: Seamless ramp

04

Flush Door Handle Actuators

Cycle all 4 concealed motorized door handles 5 consecutive times. Observe alignment flushness and detect clicking microswitch hesitation.

Pass: < 0.8s deployment

05

DiLink Flash Boot Duration

Cold start the Qualcomm Snapdragon 665/690 head unit. Measure boot time to active navigation display; excessive boot times indicate eMMC flash wear.

Pass: < 12 sec cold boot

MILESHIFT ACTUARIAL VERDICT

RETAIN & OVERHAUL BRAKE CALIPERS

RESERVE BUDGET FOR OVERSEAS ELECTRONICS MODULES

Expected 24-Mo Outlay €980 Predictable routine

Equity Residual (at 90k) 51% Of original purchase

The 2021 BYD Han EV remains one of the lowest-burden executive commuters if treated with proactive caliper servicing and rust-inhibiting connector sprays. Battery structural reliability surpasses nickel-rich counterparts by a substantial margin.

Generational Architecture Evolution BENCHMARK COMPARISON

2020 HAN EV (LAUNCH SPECIFICATION)

First-gen Blade Battery, standard IGBT motor controller, slower 60 kW DC taper threshold.

SCORE: 68/100

[AUDITED] 2021 HAN EV EXTENDED RANGE

SiC MOSFET standard on front drive, upgraded DiLink 4.0 software, refined Brembo package.

SCORE: 86/100

2023 HAN EV CHAMPION EDITION

FSD variable damping suspension, aluminum subframes, DiSus-C chassis upgrade, 85.4 kWh pack option.

SCORE: 91/100

verified_user

OFFICIAL REGULATORY DIRECTIVE NOTICE Safety bulletins and customer satisfaction campaigns vary by geographic jurisdiction. Verify official source through national vehicle safety databases (NHTSA, Kraftfahrt-Bundesamt KBA, DVSA) using vehicle-specific 17-digit VIN. All displayed actuarial values are illustrative UI data.