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Reducing CO 2 from Transport Energy Saving Trust Teresa Jackson Car choice Top ten fuel efficient cars Car sharing Smarter Driving Search for “ Act on CO2 ” on the web Our Key Messages Choose a fuel efficient car Drive it efficiently Use it less Choose a fuel efficient/low CO 2 car

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Car choice

Top ten fuel efficient cars

Car sharing

Smarter Driving

Search for “Act on CO2” on the web

our key messages
Our Key Messages

Choose a fuel efficient car

Drive it efficiently

Use it less


Vehicle Emissions

Climate change

Air Quality

CO2 and NO2 are green-house gases. They cause global warming


Oxides of Nitrogen

Describes a number of combinations of nitrogen and oxygen molecule

i.e. NO, NO2 or N2O


Carbon dioxide


Carbon Monoxide

Unburnt Hydrocarbons

Small droplets of unburnt fuel. These are very carcinogenic.


Fine particles can have an adverse effect on human health.


Fuel and CO2

Fuel consumed is directly linked to amount of CO2 emitted


Choosing a fuel efficient car

Choosing a low CO2 car


The figures

New car models are tested using the New European Driving Cycle (NEDC) to establish:

  • Fuel consumptionUrban, Extra Urban and combined
  • CO2 emissions
  • Air quality emissions
  • More information from Vehicle Certification Agency

Choose a low CO2 car

119 g/km

182 g/km

petrol or diesel
Petrol or diesel?
  • Diesel is more efficient so uses less fuel – so CO2 is less
  • Petrol has lower air quality emissions
  • Diesel cars with a Diesel Particulate Filter are the best of both worlds.
  • BUT…
petrol or diesel18
Petrol or diesel?
  • Diesel cars are more expensive (+£1000)
  • Diesel fuel is more expensive (+15p p/l)

Petrol £13,325

Diesel is more efficient but due to higher costs, may not be the most economical option. Consumers need to weigh up costs and mileage to make the best decision.

Diesel £14,420


UK tax, fuel and CO2

  • Vehicle excise duty
  • Fuel duty
  • Company car tax (benefit in kind)
  • Employer’s National Insurance
  • Business Writing down allowances
  • Congestion charges?

Vehicle Excise Duty

New VED (road tax) bands and rates – cars registered after March 2001


Advice on choosing a fuel efficient car

  • Look for best in class on CO2
  • Check the car label
  • Consider downsizing
  • Evaluate the best fuel technology

Sources of information

New Cars

  • Best in class: Search for Act on CO2
  • Saving £500 p/a best in class v average (12k miles)
  • Vehicle Certification
  • What Car?:
  • Coolest Car:

Sources of information

Used Cars

  • Society of Motor Manufacturers and Traders:
  • Parkers:
  • DVLA Vehicle Enquiry:
alternative technologies and fuels
Alternative technologies and fuels






optimising petrol and diesel
Optimising petrol and diesel
  • Stop/start
  • Gear shift indicators
  • Regenerative braking
  • Electronic gear box
  • Low rolling resistance tyres
  • Weight reduction
  • Aerodynamic changes
  • Petrol and electric powered
  • Main products in the UK from Toyota, Lexus and Honda
  • Very low on CO2 ratings
  • Main benefit in city driving
  • Perform poorly on the open road
  • Diesel hybrids on the way
  • Top Gear’s item on Toyota Prius versus the BMW M3
  • 10 laps, Prius going flat out, around the track
  • Toyota Prius = 17 mpg
  • BMW M3 = 19 mpg

A hybrid does not always achieve the lowest fuel consumption

regulated biofuels
Regulated Biofuels
  • Fuel produced from crops
  • Renewable Transport Fuel Obligation (RTFO) 5% all UK fuel
  • Greater blends available:B30 – 30% biodieselE85 – 85% bioethanol
  • No cost benefit
  • CO2 benefits vary
  • Limited infrastructure although improving
unregulated biofuels
Unregulated Biofuels

Pure plant oil or Recycled cooking oil:

Car manufacturers do not warranty their vehicles when using these unregulated fuels.

The Energy Saving Trust does not advise customers to use pure plant oil or waste oil as this could damage engines.

  • Liquefied Petroleum Gas
  • Improved air quality emissions
  • Some CO2 benefit over petrol
  • ½ the cost of petrol but reducing tax incentive
  • Car runs less efficiently

CO2 for electric cars:

  • Electric cars
  • Average range = 50 miles
  • Average speed = 40mph
  • New products coming

There is a CO2 benefit but costs are difficult to justify unless used in an urban environment - particularly where congestion charges exist

smarter driving
Smarter Driving

Vehicle Maintenance

Driving Techniques

drive it efficiently
Drive it efficiently
  • Gears: Change up between 2000-2500 rpm- Petrol and diesel the same
  • Speed:
    • 85mph vs. 70mph uses approx 25% more fuel
    • Most efficient speed usually approx 45-50mph
  • Greater anticipation to avoid unnecessary acceleration & braking
drive it efficiently37
Drive it efficiently
  • Air conditioning
    • 20-25% difference between a/c on full & off
    • Typically 5% overall increase (12 month period in northern Europe)
    • Windows down?
  • Drive off immediately from cold
  • Turn off if stationary more than a minute or two
vehicle maintenance
Vehicle maintenance
  • Tyres: under-inflated by 10% add 1% to fuel consumption
  • Maintain vehicles well through regular servicing
  • Roof boxes and racks: remove when not in use
the benefits
The Benefits

15% off

  • Reduce your fuel costs- £200 per year based on an average mileage
  • Reduced emissions
  • Fewer accidents
  • Less wear & tear on the car

Smarter Driving

  • DfT’s Act on CO2 web site:
  • Search for Act on CO2
  • EST:
  • Ecodriven:
using the car less
Using the car less

Using alternatives

Reducing Mileage

reducing mileage
Reducing mileage
  • Flexible working- working from home
  • Plan trips – don’t get lostInvest in satellite navigation
  • Use online servicesDo your shopping or pay your bills, car tax online rather than visit the post office
using the car less44
Using the car less
  • Get active:
  • Walk: promote walking for sub 1 mile trips
  • Bike – Sustrans:
what are the alternatives
What are the alternatives?
  • Public Transport
  • See Transport Direct for options
  • Contact local providers
  • Book early!
  • Give it a try – even occasionally.
what are the alternatives46
What are the alternatives?
  • Car sharing
  • Try car sharing
  • For more information see:


car clubs
Car clubs
  • Car clubs provide a shared cars for communities to use.
  • Awaiting evidence they reduce car use.
  • More information:
delivering transport advice
Delivering Transport Advice

Advice line enquiries

Employee engagement

Outreach events


Thanks for listening