The manufacturer has been able to set lower across-the-board contract hire rentals because of stronger residual value predictions and lower service, maintenance and repair costs for the new car, which arrives on the road in May.
The new figures come from Vauxhall Leasing, owned by Interleasing and part of its Private Label leasing division.
Richard Keates, head of sales at Vauxhall Leasing, said: 'The new Astra represents a major advance in many areas over its predecessor and normally we would expect to have to charge customers slightly more for such enhancements.
'But new Astra has received very strong residual value forecasts from throughout the industry. This has meant that we have been able to set contract hire rates that in the majority of cases are lower than the previous model, a great position to be in, and excellent news for fleet operators.'
And in a busy week for the Luton-based firm, it has released full details of its new Euro IV-compliant diesel engines – essential weapons in the fight for fleet market share.
Vauxhall claims they will set standards for performance, torque, fuel efficiency and refinement when they start delivery in the Vectra and Signum in April.
The 1.9 CDTi will be available in 120bhp eight-valve or 150bhp 16-valve outputs – the less powerful engine replacing the current 2.2 DTi engine.
The 120bhp version in the Vectra saloon and hatchback offers 49.6mpg on the combined cycle (Vectra estate and Signum: 47.1mpg) with carbon dioxide emissions of 154g/km (estate and Signum:162g/km).
The 150bhp version has fuel consumption of 48.6mpg on the combined cycle (Vectra estate and Signum 46.3mpg) and CO2 emissions of 159g/km (estate and Signum: 165g/km).
The 120bhp 1.9 CDTi represents a saving of up to £628 a year in BIK tax over the 2.2 DTi comparing 40% tax-payers driving a Vectra hatchback.
The engine will be priced at the same level as the 2.2 DTi, while the 150bhp version is available at a £500 premium. Estates and Signums add an extra £300 for the cost of the diesel particulate filter.
|New Astra leasing rates (monthly)|
|Current Astra 36/60||New Astra 36/60||Variance|
|LS 1.4 16v 5dr £247.74||Club 1.4 16v 5dr £237.04||£10.70|
|LS 1.7 CDTi 5dr £275.12||Club 1.7 CDTi (80PS) £268.65||£6.47|
|Club 1.6 16v 5dr £234.47||Life 1.6 16v 5dr £227.66||£6.81|
|Club 1.7 CDTi 5dr £256.67||Life 1.7 CDTi (80PS) 5dr £249.69||£6.98|
|Elegance 1.6i 16v 5dr £272.24||Design 1.6i 16v 5dr £265.17||£7.07|
|Elegance 2.0 DTi (80PS) 5dr £303.26||Design 1.7 CDTi (100PS) 5dr £294.25||£9.01||SRi 1.8i 16v 5dr £291.56||SRi 1.8i 16v £284.55||£7.01|