A comprehensive comparison of key specifications between the 2014 Bentley Mulsanne Speed and the 1999 Bentley Hunaudieres. To facilitate a clear understanding, we've organized the essential data into a concise table for your convenience.

To sum it up, we've put together a convenient table below, summarizing the key specifications of 2014 Bentley Mulsanne Speed and 1999 Bentley Hunaudieres. Whether you're drawn to 2014 Bentley Mulsanne Speed's practicality or 1999 Bentley Hunaudieres's beauty, this comparison will help you make an informed decision:

Cars
	2014 Bentley Mulsanne Speed	1999 Bentley Hunaudieres
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General
Build Start	2014	1999
ModelVariant	Mulsanne	Concept
Body Details
Body Style	15
Body type	4/5 seater sedan/saloon	2 seater fixed-head coupé
Brakes
bmep (brake mean effective pressure)	2047.9 kPa (297 psi)kPa	1192.8 kPa (173 psi)kPa
Brakes F/R	VeDi/VeDi-S-ABS
Front brake diameter	1995mm
Rear brake diameter	370 mmmm
Chassis & Geomtry
Length:Wheelbase Ratio	1.71	1.67
Turns Lock-to-Lock	3.300
Dimensions
Fuel Tank Capacity	96litres
Height	1521mm	1192mm
Kerb weight	2685kg
Length	5575mm	4432mm
Wheelbase	3266mm	2650mm
Width	1926mm	1985mm
Engine details
Aspiration	Turbo	Normal
Bore × Stroke	104.1 × 99.1mm	84 × 90.3mm
Bore/stroke ratio	1.05	0.93
Capacity	6.8 litre (6750 cc)	8 litre (8007 cc)
Catalytic converter	Y	Y
Cylinders	V 8 in 90° vee	W 16
Engine coolant	Water	Water
Engine layout	longitudinal	longitudinal
Engine manufacturer	Rolls-Royce	Volkswagen
Engine position	front	mid
Engine Type	turbocharged petrol	naturally aspirated petrol
Final drive ratio	2.92
Gearbox	8	5
Specific output	78.5bhp/litre
Specific torque	162.96Nm/litre
Sump	wet sumped
Top gear ratio	0.67
Fuel Consump.
Carbon dioxide emissions	342.0 g/km
CO2 Effizienz (DE)	G
Fuel consumption	22.8/9.9/14.6 l/100km urban/extra-urban/combined
Fuel system	EFI
km/litre	4.4/10.1/6.8 km/l urban/extra-urban/combined
litres/100km	22.8/9.9/14.6 l/100km urban/extra-urban/combined
UK MPG	12.4/28.5/19.3 UK MPG urban/extra-urban/combined
US MPG	10.3/23.8/16.1 US MPG urban/extra-urban/combined
VED band (UK)	M
Performance
Acceleration 0-100km/h	4.9 ss
Acceleration 0-160km/h (100mph)	11.10 ss
Acceleration 0-60mph	4.8s
Drive wheels	rear wheel drive	all wheel drive
maximum power output	537 PS (530 bhp) (395 kW)at 4200 rpm
Maximum speed	306km/h
Maximum Torque	1100 Nm (811 ft·lb) (112.2 kgm)at 1750 rpmlb/ft
Power-to-weight ratio	200.14 PS/tonne (1000 kg), 147.2 kW/tonne (1000 kg), 197.39 bhp/tonne (1000 kg), 0.09 bhp/lb
Weight-to-power ratio	6.79 kg/kW, 11.35 lb/bhpkg/kW
Prices
Saftey
Wheels & Tyres
Tyres front	265/40 ZR 21
Tyres rear	265/40 ZR 21
Wheel size front	21x9J
Wheel size rear	21x9J
Aerodynamics
Other
Number of doors	4	2
RAC rating	53.8	70.0
Unitary capacity	843.75cc	500.44cc
Valve gear	overhead valve (OHV), 2 valves per cylinder, 16 valves in total	double overhead camshaft (DOHC), 4 valves per cylinder, 64 valves in total

In conclusion, the 2014 Bentley Mulsanne Speed and 1999 Bentley Hunaudieres are two distinct cars and your choice ultimately boils down to your individual preferences and priorities. We hope this analysis aids you in your automotive journey, helping you find the perfect fit for your needs and desires.