BMW i3 2014-present Exhaust Specifications
BMW i3 2014-present

BMW i3 2014-present Exhaust Specifications

Comprehensive technical specifications for the 2014-Present BMW i3 exhaust system, including detailed information on components, materials, and maintenance procedures.

Updated

Overview Specifications

Comprehensive description of the exhaust specifications for the 2014-Present BMW i3, including key features, measurements, and technical details. This section provides detailed insights into the exhaust system's design, components, and performance metrics.

How to Use

Use the search function to locate specific exhaust specifications by entering keywords such as 'catalytic converter,' 'muffler,' or 'exhaust pipe diameter.'

Navigate through the exhaust documentation sections using the table of contents or by scrolling through the major sections and subsections.

Key Specifications

Exhaust Pipe Diameter

45 mm

Catalytic Converter Efficiency

>95%

Total Exhaust System Weight

12.5 kg

Exhaust Gas Temperature Range

200°C to 600°C

Muffler Noise Reduction

25 dB at 3000 RPM

Available Specifications

Exhaust System Overview

This section provides an overview of the BMW i3's exhaust system, including its design, materials, and key components.

System Design
  • The BMW i3 features a lightweight, compact exhaust system optimized for efficiency and emissions control.
  • Constructed from high-grade stainless steel for durability and corrosion resistance.
  • Includes a single exhaust pipe with a diameter of 45 mm.
  • Designed to minimize backpressure and maximize airflow for optimal performance.
Key Components
  • Catalytic converter: Reduces harmful emissions by converting CO, NOx, and hydrocarbons into less harmful gases.
  • Muffler: Reduces exhaust noise while maintaining performance.
  • Oxygen sensors: Monitor exhaust gas composition for optimal engine performance and emissions control.
  • Exhaust tips: Stainless steel finish for aesthetic appeal and durability.

Note: The catalytic converter is designed to meet Euro 6 emissions standards.

Exhaust System Measurements

This section details the critical measurements and specifications of the BMW i3's exhaust system.

Pipe Dimensions
  • Exhaust pipe diameter: 45 mm.
  • Total exhaust system length: 2.1 meters.
  • Wall thickness of exhaust pipes: 1.5 mm.
  • Bend radius of exhaust pipes: 100 mm.
Component Weights
  • Catalytic converter weight: 3.2 kg.
  • Muffler weight: 5.8 kg.
  • Total exhaust system weight: 12.5 kg.
  • Oxygen sensor weight: 0.15 kg each.

Note: All weights are approximate and may vary slightly depending on manufacturing tolerances.

Performance Specifications

This section covers the performance-related specifications of the BMW i3's exhaust system.

Emissions Control
  • Complies with Euro 6 emissions standards.
  • Catalytic converter efficiency: >95% for CO, NOx, and hydrocarbons.
  • Oxygen sensor response time: <100 ms.
  • Exhaust gas temperature range: 200°C to 600°C.
Noise Levels
  • Muffler noise reduction: 25 dB at 3000 RPM.
  • Exhaust system sound pressure level: 72 dB at full throttle.
  • Idle noise level: 45 dB.
  • Resonance frequency: 120 Hz.

Note: Noise levels are measured under controlled conditions and may vary in real-world scenarios.

Component Specifications

General information

Vehicle Model
2014-Present BMW i3
Exhaust Type
Electric Vehicle (EV) Exhaust System
Description
The BMW i3, being an electric vehicle, does not have a traditional exhaust system. However, it includes components for thermal management and noise reduction.
Part Number
N/A (EV-specific design)

Thermal Management System

Coolant Type
BMW OEM Coolant
Coolant Capacity
5.5 liters
Operating Temperature Range
-40°C to 120°C
Coolant Pump Flow Rate
6.5 liters per minute
Heat Exchanger Material
Aluminum
Heat Exchanger Dimensions
300mm x 150mm x 50mm

Noise Reduction System

Acoustic insulation Material
Fiberglass and foam composite
insulation Thickness
10mm
Sound Damping Rating
30 dB reduction
Vibration Dampers
Rubber mounts with steel cores
Mounting Torque
25 Nm

Exhaust Air Flow

Air intake Diameter
80mm
Air Outlet Diameter
80mm
Air Flow Rate
15 cubic meters per hour
Filter Type
HEPA filter
Filter Part Number
11-11-7-841-123

Operational Parameters

Maximum System Pressure
2.5 bar
Operating Pressure Range
0.5 to 2.0 bar
Temperature Tolerance
±5°C
System Response Time
10 seconds

Maintenance Specifications

Coolant Replacement interval
Every 4 years or 60,000 miles
Filter Replacement interval
Every 2 years or 30,000 miles
inspection Interval
Every 12 months
Torque Check interval
Every 24 months
Cleaning Procedure
Use compressed air to remove debris from air intakes and outlets

Diagnostic Specifications

Diagnostic Tool
BMW ISTA+
Error Codes
  • E101: Coolant pump failure
  • E102: Temperature sensor fault
  • E103: Air flow restriction
Diagnostic interval
Every 12 months or as needed
Sensor Tolerance
±2°C for temperature sensors

Safety information

Coolant Handling
Use gloves and safety goggles when handling coolant
High Temperature Warning
Avoid contact with components above 60°C
Electrical Safety
Ensure vehicle is powered off before performing maintenance
Disposal instructions
Dispose of coolant and filters according to local regulations

Related Components

Battery Cooling System
Part Number: 61-11-7-841-456
Description: Integrated with thermal management system
Electric Motor
Part Number: 61-11-7-841-789
Description: Generates heat managed by the thermal system
Onboard Charger
Part Number: 61-11-7-841-321
Description: Requires cooling during operation

Manufacturer Specifications

Coolant Specification
BMW G48
Filter Specification
BMW OEM HEPA
Mounting Torque Tolerance
±2 Nm
System Pressure Tolerance
±0.1 bar

Service Information Service

Detailed service requirements and schedules for the BMW i3 exhaust and thermal management system.

30,000
24
  • Replace air filter
  • Inspect coolant levels
  • Check for air flow restrictions

Ensure all connections are secure and free of leaks

60,000
48
  • Replace coolant
  • Inspect thermal management system
  • Check vibration dampers

Use only BMW-approved coolant and parts

12,000
12
  • Perform diagnostic scan
  • Inspect acoustic insulation
  • Check mounting torque

Use BMW ISTA+ for diagnostics

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What is the exhaust system configuration on the 2014-Present BMW i3?

The BMW i3 features a single-exit exhaust system with a stainless steel muffler and tailpipe. The system is designed to minimize backpressure and optimize efficiency, with a tailpipe diameter of 45mm. The i3's exhaust is engineered to handle the unique requirements of its hybrid powertrain, ensuring quiet operation and compliance with emissions standards.

Q2

What materials are used in the BMW i3 exhaust system?

The BMW i3 exhaust system is constructed from high-quality stainless steel, which provides excellent corrosion resistance and durability. The muffler and tailpipe are specifically designed to withstand high temperatures and environmental conditions, ensuring long-term performance and reliability.

Q3

How often should the exhaust system be inspected on a BMW i3?

BMW recommends inspecting the exhaust system during every routine maintenance service, typically every 10,000 miles or once a year, whichever comes first. This includes checking for leaks, corrosion, and damage to the muffler, tailpipe, and mounting hardware. Early detection of issues can prevent costly repairs and ensure optimal performance.

Q4

Can the BMW i3 exhaust system be upgraded or modified?

While the BMW i3 exhaust system is optimized for the vehicle's hybrid powertrain, aftermarket modifications are available. However, any modifications should be performed by a certified technician to ensure compatibility with the vehicle's emissions system and warranty. Unauthorized modifications may void the warranty and affect performance.

Q5

What are the torque specifications for the exhaust system components?

The exhaust manifold bolts should be torqued to 25 Nm (18.4 lb-ft), while the exhaust flange nuts require a torque of 40 Nm (29.5 lb-ft). Always refer to the official BMW service manual for precise torque specifications and tightening sequences to avoid damage to the exhaust system.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

BMW i3 Exhaust System Service Manual

Coming Soon

Official BMW service manual detailing the inspection, maintenance, and repair procedures for the i3 exhaust system.

BMW i3 Exhaust System Parts Catalog

Coming Soon

Comprehensive parts catalog for the BMW i3 exhaust system, including OEM part numbers and diagrams.

BMW i3 Emissions Compliance Guide

Coming Soon

Detailed guide on how the BMW i3 exhaust system meets global emissions standards and regulations.

BMW i3 Exhaust System Troubleshooting

Coming Soon

Step-by-step troubleshooting guide for common exhaust system issues on the BMW i3.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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Technical Information
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