Businesstravel Taxi All emission factor trends — Global
Across all regions, the emission factor for taxis has reduced over 2016–2024, with an overall roughly 9% reduction. This pattern mirrors broader shifts in business travel and taxi fleets: newer, more efficient engines, tighter urban emission rules, and greater use of cleaner fuels or hybrid configurations are replacing older, higher-emitting vehicles. According to DESNZ, this historic trend reflects steady efficiency gains and fleet renewal rather than short-term volatility. The trend is reinforced by global and national policy momentum toward lower transport emissions, including incentives for fleet modernization and the growing prevalence of low-emission zones; the ICCT notes that electrification and tighter standards are increasingly shaping taxi emissions, which supports the observed downward trajectory.
- Category
- Business travel
- Geography
- Global
- Unit
- kgCO2e / km
- Baseline
- Baseline 2024 → 2050
- Last updated
- Updated
Regions covered: All regions
Projection chart
Cumulative percentage change in the emission factor from the 2024 baseline. Shaded band shows min–max range; bold line is the Viable Pathway mid projection.
Data table (Viable mid projection)
| Year | Min | Viable mid | Max |
|---|---|---|---|
| 2024 | 0.0% | 0.0% | 0.0% |
| 2025 | -0.9% | -0.9% | -0.9% |
| 2026 | -1.3% | -1.3% | -1.3% |
| 2027 | -1.6% | -1.6% | -1.6% |
| 2028 | -2.0% | -2.0% | -2.0% |
| 2029 | -2.3% | -2.3% | -2.3% |
| 2030 | -2.7% | -2.7% | -2.7% |
| 2031 | -3.1% | -3.1% | -3.1% |
| 2032 | -3.4% | -3.4% | -3.4% |
| 2033 | -3.8% | -3.8% | -3.8% |
| 2034 | -4.2% | -4.2% | -4.2% |
| 2035 | -4.5% | -4.5% | -4.5% |
| 2036 | -4.9% | -4.9% | -4.9% |
| 2037 | -5.3% | -5.3% | -5.3% |
| 2038 | -5.7% | -5.7% | -5.7% |
| 2039 | -6.0% | -6.0% | -6.0% |
| 2040 | -6.4% | -6.4% | -6.4% |
| 2041 | -6.8% | -6.8% | -6.8% |
| 2042 | -7.2% | -7.2% | -7.2% |
| 2043 | -7.6% | -7.6% | -7.6% |
| 2044 | -8.0% | -8.0% | -8.0% |
| 2045 | -8.3% | -8.3% | -8.3% |
| 2046 | -8.7% | -8.7% | -8.7% |
| 2047 | -9.1% | -9.1% | -9.1% |
| 2048 | -9.5% | -9.5% | -9.5% |
| 2049 | -9.9% | -9.9% | -9.9% |
| 2050 | -10.3% | -10.3% | -10.3% |
How the Viable mid projection is calculated
Weighted projection based on pedigree quality assessments, normalised to 2024 emission factor
Sources and scenarios
| Scenario | Source | Type | Ambition | Pedigree |
|---|---|---|---|---|
|
DESNZ_Historic
Historic reductions from previous years projected linearly forwards. |
DESNZ
Emission factors have historically reduced from 2016 to 2024 in this way: 0.228 0.21863 0.21482 0.21024 0.20369 0.20826 0.20826 0.208 0.208 |
historic | base | 1 |
Changelog
- — Updated vpmid mid from blended projection (len=27); appended source1 from DESNZ (historic) year=2024, pedigree_score=1.
Frequently asked questions
What is driving businesstravel taxi all decarbonisation in Global?
Across all regions, the emission factor for taxis has reduced over 2016–2024, with an overall roughly 9% reduction. This pattern mirrors broader shifts in business travel and taxi fleets: newer, more efficient engines, tighter urban emission rules, and greater use of cleaner fuels or hybrid configurations are replacing older, higher-emitting vehicles. According to DESNZ, this historic trend reflects steady efficiency gains and fleet renewal rather than short-term volatility. The trend is reinforced by global and national policy momentum toward lower transport emissions, including incentives for fleet modernization and the growing prevalence of low-emission zones; the ICCT notes that electrification and tighter standards are increasingly shaping taxi emissions, which supports the observed downward trajectory.
How does Viable Pathway calculate the mid projection?
Weighted projection based on pedigree quality assessments, normalised to 2024 emission factor
Discussion
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